M-ARK · Mac and Windows · Digital download
One payment, no subscription, no account. Prices in USD.
Turn the computer you already own into an offline survival system. The survival library with search, maps and routes with no signal, your food, water, medicine and equipment records, and a private AI that answers from the library. Everything runs on your own machine with the internet off, with or without the AI.
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An 8 minute tour of the real app, with a household from Sisters, Oregon loaded in. Library, stock, maintenance, maps, the compass fix, the calendar, Morse and the radios, and at the end the AI that knows all of it.
8:34 · narrated · English subtitles in the player
No account to log into, no server to reach. M-ARK is on your own computer, so the night the grid goes down it opens like any other app, with your library, your stock and your maps exactly where you left them.
See what it doesFive of the jobs M-ARK does, on real screens from the app. Hover or tap a number to read what that part is.
Every can, bottle, cartridge and medicine in real units, in batches with their own dates, at home, in the cabin and in the cache. M-ARK tells you what expires next, how many days of food and water each person has, and which medicine runs out on Thursday.
In the shelter, what expires first and how many days are left for each person.
Expires nextHow many items have expired, then the five with the nearest dates.Needs doingPast its date, expiring within 30 days, low stock, medicine and water running out. Each is also a reminder.USERecords what you used. ADD TO STOCK, ADJUST and MOVE sit next to it.STOCK lists what you have, at every site.
Trucks, generators, chainsaws, pumps, solar banks, firearms, health devices. 106 kinds of equipment come with 611 preset maintenance tasks. Each item gets a score out of 100, due tasks land in the calendar, and the manual for that kind of machine is one click away.
In the rain, the generator task list and its manual on a rugged tablet.
Overall and worstWORST shows the lowest score, so one failed machine is not hidden by the average.DUE NOWThe red line counts the overdue tasks.One card per itemThe reading, the score and what is due. Click it to open the item.+ REGISTERRegister equipment. The catalog knows 106 kinds with 611 preset tasks.Each item gets a maintenance score out of 100, and due tasks go to the calendar.
The world map lives on your disk. Plan routes by car, on foot, by bike or straight across country, around the places you mark as dangerous, and fix your position from compass bearings when the GPS is gone.
In the truck, the route on a tablet with no bars on the phone.
FROM and TOType a place, home, one of your sites or saved places.ModesCAR, WALK, HIKE, BIKE or CROSS.Distance and timeWith the climb, the descent and each turn. Click a turn to see it on the map.Danger placesEvery route goes around your danger places, and the result says which ones.HEIGHTThe height along the route, with the steepest stretches in red.ROUTE plans a trip by car, on foot, by bike or across open ground.
A private AI runs on your own processor and answers only from the manuals on your disk, with a number on every statement that opens the source. It knows your stock and your people, so the answer to “how many days of water do we have” is a real number. Leave it switched off and everything else still works.
On the porch, a question answered from the library while the street is under water.
PipelineM-ARK searches the library first. Each step shows how many passages it found and how long it took.GenerationThe answer is written on this computer by the model you chose. Nothing goes to the internet.AnswerThe AI writes from the passages it found. Every statement carries the number of its source.Source numbersClick a number to open the source at the cited page.Your recordsA line under the answer names the household records that were used, here the stock, the sites and the people.The local AI answers from the library and from your own records, and numbers every source.
The library that comes with M-ARK is meant to carry a household through anything, from a week without power to the loss of the grid, and to start again afterwards: medicine and surgery, water and sanitation, growing and preserving food, building, electricity and engines, metalwork, chemistry, radio, navigation, and the reference works a town would need. When you need something specific to your place, RESEARCH finds it: type what you are looking for, the built-in AI searches the web, you inspect and approve each source, and it joins the library on your disk. Or hand the job to ChatGPT or Claude, which prepare a pack that M-ARK imports in one step.
At the cabin desk, adding the Deschutes County burn rules and the Metolius trail map to the library.
QueryType what you look for. The research chat searches the books on the drive first.ALLOW ONLINE SEARCHTick it to let the research chat search the web as well.Sources for reviewINSPECT a source, then SELECT the good ones and REJECT the bad ones. A selected PDF is downloaded only after APPROVE DOWNLOAD.CREATE DRAFTWrites a summary from the selected sources. Correct it, then APPROVE AND INDEX.RESEARCH uses the internet to find new material for the library. You check every source first.
Turn on sharing and the family scans a QR code. Their phones open M-ARK in the browser, on your Wi-Fi or on the laptop’s own hotspot when the router is down. Nothing to install, and the AI on the main computer answers them too.
Every picture on this page is the app itself. Explore them one by one.
From people who bought M-ARK, in their own words. We publish every review we receive, good or bad, and never write our own.
We lost power for most of a night two days after I installed it. Asked how many days of water we had and it told me 38, with the page it got the numbers from. The kids read on their phones off the laptop. That alone was worth the price.
ExampleI have a generator, a chainsaw, a pump and two trucks, and nothing kept track of any of it. Now each one has a score and the overdue jobs show up in the calendar. The manual for the generator is one click away, which I did not expect.
ExampleThe library download is big, plan for an evening with the internet on. After that it has not touched the network once, which I checked. The AI is slower than the online ones, but it only quotes what is on my disk and shows the source, and that is the point. Four stars because the Windows installer asked me to allow it twice.
ExampleMy husband is diabetic and my daughter has an EpiPen. M-ARK warns me a month before anything expires and knows which medicine belongs to whom. The rations calculator told me our food lasts 61 days for the four of us. I had guessed 90.
ExampleNo bars for two days. Routed from the lease gate to the creek crossing on foot, took bearings off two hills and it put me within a few hundred yards. Printed the map sheet before we left. The mesh radio text worked between the trucks.
ExampleOn my old 8 GB machine the AI was slow until I switched to the small model, then it was fine. Everything else runs quick. No account, no subscription, and I like that purge wipes it all. I would buy it again.
ExampleType a question the way you would ask a well-read friend. The AI on your own computer searches the library, writes the answer only from what it found, and numbers every statement so you can open the source. It also knows your household, your stock and your equipment, so “how many days of water do we have” gets a real number.
PipelineM-ARK searches the library first. Each step shows how many passages it found and how long it took.GenerationThe answer is written on this computer by the model you chose. Nothing goes to the internet.AnswerThe AI writes from the passages it found. Every statement carries the number of its source.Source numbersClick a number to open the source at the cited page.Your recordsA line under the answer names the household records that were used, here the stock, the sites and the people.The local AI answers from the library and from your own records, and numbers every source. Hover or tap a number for its note.
+ NEW CHATStarts a new conversation. Empty conversations are not kept.ConversationsYour earlier conversations. Pin one to the top, or delete it.ARCHIVELists all saved conversations.Sources for this answerOpen it to see the passages the answer was written from.Every question starts or continues a conversation, kept in the side panel. Hover or tap a number for its note.
Search boxType words or a question and press Enter.ADVANCEDChoose the methods. KEYWORD finds the exact words, SEMANTIC finds the same meaning in other words, ARCHIVES searches the offline websites.FILTERShow only one type, one method, one subject or one source.+ NEW SEARCHStarts a new search. Earlier searches stay in the side panel.SEARCH finds passages in the library without the AI. It is fast and works on every computer. Hover or tap a number for its note.
Title, author, subjectGive the document a title, an author and a subject.Text toolsBold, colors, sizes, lists, and pictures, videos or audio from the media bank.SAVE DRAFTM-ARK also saves the draft by itself after 1.5 seconds.SAVE TO LIBRARYWhen the document is complete, QUESTIONS and SEARCH can find it and cite it.Your documentsThe side panel lists them. A tick shows a document that is in the library.TEACH lets you write your own documents and add them to the library. Hover or tap a number for its note.
QueryType what you look for. The research chat searches the books on the drive first.ALLOW ONLINE SEARCHTick it to let the research chat search the web as well.Sources for reviewINSPECT a source, then SELECT the good ones and REJECT the bad ones. A selected PDF is downloaded only after APPROVE DOWNLOAD.CREATE DRAFTWrites a summary from the selected sources. Correct it, then APPROVE AND INDEX.RESEARCH uses the internet to find new material for the library. You check every source first. Hover or tap a number for its note.
Ask about this computerType a question. M-ARK searches the files, reads the matching documents and writes an answer with the files it used.ExamplesFor example, who used this computer, and what for. Useful on a computer that you found.OVERVIEWThe account and computer name, the usual folders, the newest files and the dates of the pictures.Search the filesFind files by words or name, kind and folder. It never reads hidden folders or the places where passwords are kept.THIS COMPUTER works with the files of the computer that M-ARK runs on. Hover or tap a number for its note.
Medical, water, food, power, repair, building, navigation, radio and more, about 8,000 manuals and books in 24 subjects, 88 offline reference sites and thousands of classics. Emergency cards open the right manual at the right page, with no AI and no wait.
One card per emergencySevere bleeding, not breathing, choking, burns, broken bones, heat stroke, cold injuries and more.OPEN, PAGEOpens the manual at its page for that topic, for example FM 4-25.11 First Aid or Where There Is No Doctor.Read the first lines hereShows the first lines of that page, so you can start before the PDF opens.EMERGENCY needs no AI and opens at once. Each card opens a manual at its own page. Hover or tap a number for its note.
Search all library contentSearches everything on the drive, the same as INFO › SEARCH.Continue readingThe manuals you started, with the part you read.Marks and notesYour bookmarks and notes in the manuals, for example the page about the isolation switch for the cabin battery.SubjectsClick a subject on the left, or All subjects.FilterType part of a title or an author. Click a column name to sort.BOOKS & MANUALS holds the PDF library, sorted by subject. Hover or tap a number for its note.
Four shelvesENCYCLOPEDIAS, Q&A FORUMS, PRACTICAL GUIDES and REFERENCE.Search themSearches the full text of all the archives on this shelf at once.iFixit Repair GuidesStep by step repairs with photos, offline.OPEN COLLECTIONSearch an archive, browse its folders and topics, or go through all articles from A to Z.ARCHIVES holds whole websites kept offline. Hover or tap a number for its note.
Find a bookType a title or an author.ShelvesChoose a shelf or ALL SHELVES.SortPOPULAR FIRST, TITLE A-Z or AUTHOR A-Z.Continue readingThe books you started, with the part you read.LITERATURE holds classic books from Project Gutenberg, and your own books. Hover or tap a number for its note.
ForagingWild food plants for California, Cyprus and Hungary, and the plants that look like them.Medicines and medicinal plantsCommon medicines by active ingredient, the products that contain them in each country, and medicinal plants.Regional packsPractical local facts for California, Cyprus and Hungary, with their sources.DraftsEach guide says it was drafted with AI and not reviewed by a professional. Never eat a wild plant because of a guide alone.FIELD GUIDES holds three sets of guides that work without internet. Hover or tap a number for its note.
For this computerMarks the version for your computer.OPENStarts the program.VERIFY CHECKSUMChecks that the file is complete.HOW TOExplains the use.SOFTWARE lists the programs on the drive. Hover or tap a number for its note.
FINDFinds words in the whole document. The counter shows the hits.MARKBookmarks the page. You can type a note for it.ASKAsks the AI about this page or about the text you selected.READReads the page aloud with the voices of your computer.Your placeThe bottom bar shows the page, the part you read and the time left.The PDF reader remembers your page and shows how much is left. Hover or tap a number for its note.
FINDType a word. The current hit is orange, the others yellow.Hit counterShows which hit you are on. Enter goes to the next one.RESULTSClick a line to go to that hit.INVERTWhite text on black, for reading at night.RESULTS lists every hit with its page and a line of text around it. Hover or tap a number for its note.
TOCThe contents and your marks.AaLayout, font, size, line width and colors.MARKBookmarks the place. Select text to highlight it or add a note.ASKAsks the AI about the article or the selected text.Archive articles and books open in the archive and book reader. Hover or tap a number for its note.
The world map lives on your computer. Plan routes by car, on foot, by bike or straight across country, around the places you mark as dangerous. Fix your position with a compass, print a map sheet with a grid, and keep four million water points, pharmacies, shelters and fuel stops at hand.
Place or latitude, longitudeType a place name or a position and click FIND.LandmarksFIND also knows about two million landmarks, with their kind and height.Find a place, a landmark or a position. Nothing is looked up online. Hover or tap a number for its note.
FROM and TOType a place, home, one of your sites or saved places.ModesCAR, WALK, HIKE, BIKE or CROSS.Distance and timeWith the climb, the descent and each turn. Click a turn to see it on the map.Danger placesEvery route goes around your danger places, and the result says which ones.HEIGHTThe height along the route, with the steepest stretches in red.ROUTE plans a trip by car, on foot, by bike or across open ground. Hover or tap a number for its note.
Magnetic or TrueIn Magnetic mode M-ARK fills in the declination for the place.Landmark and bearingType the landmark or pick it on the map, then the bearing you read, and click ADD.The fixWhere the lines cross is your position, also in UTM and MGRS.SAVE AS PLACEKeeps the position in PLACES with the bearings it came from.COMPASS finds your position from compass bearings to landmarks you can see. Hover or tap a number for its note.
+ ADD PLACEAdd a well, a spring, a meeting point or any place you know.GroupsSwitch the groups on and off, for example WATER, HEALTH or DANGER.Our sites and homeYour sites from INVENTORY show on the map.PRINT AREAPrints the map with a grid, a scale and the places, for a paper copy.Nearest firstThe list shows the places nearest to home, or to a site.PLACES shows your own points and about four million public places from OpenStreetMap. Hover or tap a number for its note.
CROSSThe line avoids steep slopes, the sea and your danger places. It shows dashed, because it is not a path.Distance and timeFor open ground without rests. In scrub, sand, deep snow or a bog count half as much again, or double.LegsEach leg is a bearing to walk, true and on the compass, and a distance to count.HOW TO WALK ITA lesson in nine steps on walking a cross-country line.Dashed lineNot a path. Look along the line with TERRAIN on and add VIA points to steer round what you see.CROSS plans a walking line over open ground from the shape of the land. Hover or tap a number for its note.
Log what you store and who you are feeding. M-ARK counts the days of food and water, plans rations by each person’s needs, links medicines to the people who take them, and warns you before anything expires or runs low.
Main homeThe AI and the map take it as home.Other sitesA cabin, a camp, a cache or a meeting point, each with what is kept there.Home profileThe place, climate, water source, likely threats and languages. The AI reads it with every question.Add a siteAll fields are optional.A site is a place where the household lives, stores goods or can go. Hover or tap a number for its note.
Expires nextHow many items have expired, then the five with the nearest dates.Needs doingPast its date, expiring within 30 days, low stock, medicine and water running out. Each is also a reminder.USERecords what you used. ADD TO STOCK, ADJUST and MOVE sit next to it.STOCK lists what you have, at every site. Hover or tap a number for its note.
Describe stock to the local AIPaste a description, for example 3 bags of rice 5 kg, and check the proposal.By handType the name, the category, the quantity and the unit.FINDChoose the food in the database of 95,783 foods. M-ARK then knows the nutrients.The exact foodValues are per 100 g of the edible part.INTAKE adds new stock, by hand or with the AI. Hover or tap a number for its note.
SearchFind a use by item or note.CaloriesFood shows the calories that were eaten.UNDOPuts the amount back into stock.USE LOG lists every use, newest first. Hover or tap a number for its note.
One card per personEnergy, age, weight and water a day. The age goes up by itself.AllergiesAllergies go with every question about health, food or cooking. An answer that names a matching medicine or food gets a warning.EDITOpens the profile with the medical record, which stays on the host computer.Each person has an energy profile, an age, a weight, a water need and a medical record. Hover or tap a number for its note.
Planning daysType the number of days to plan for.Who is includedTick the people. The share of each follows their energy needs.How the food is dividedEach person with energy, protein, fiber, iron, calcium and vitamin C, and the percent of their need.CALCULATEFood past a use-by date is never counted.RATION PLAN shows how long the food lasts and how it divides between the people. Hover or tap a number for its note.
Based on the lastChoose 7, 30 or 90 days.Food eatenThe calories used each day.Runs out firstFrom the speed of use.Who ate whatA pie chart of the logged meals.ANALYTICS shows how fast things are used and what runs out first. Hover or tap a number for its note.
Trucks, generators, pumps, solar banks, firearms, health devices. 106 kinds of equipment with 611 preset maintenance tasks, a score for each item, parts taken from stock, and calculators for water, power, food, building and radio.
Overall and worstWORST shows the lowest score, so one failed machine is not hidden by the average.DUE NOWThe red line counts the overdue tasks.One card per itemThe reading, the score and what is due. Click it to open the item.+ REGISTERRegister equipment. The catalog knows 106 kinds with 611 preset tasks.Each item gets a maintenance score out of 100, and due tasks go to the calendar. Hover or tap a number for its note.
Task stateA task is due soon within 30 days or within a part of its interval.DONECheck the date and the reading, type the cost and a note, and click MARK DONE.Use & fuel logRecords trips, fuel, repairs and notes for the item.AI & manualsThe books in the library that fit this kind of equipment.Each item lists its tasks with their state, OVERDUE, DUE SOON or OK. Hover or tap a number for its note.
Use & fuel logLog a trip, a fill, a repair or a note.HistoryEach entry with its date, reading and liters. After two fills M-ARK shows the fuel use.The use and fuel log keeps the history of each item. Hover or tap a number for its note.
TemplatesChange them to fit your household. Changes apply to equipment you register after the change.One kindClick a kind, for example CAR, to see its tasks. + ADD TASK adds your own, RESET TO DEFAULT brings back the original list.TEMPLATES holds the preset tasks for each kind of equipment. Hover or tap a number for its note.
Nine groupsWATER, POWER, FOOD, NAVIGATION, WEATHER & BODY, BUILD, MECHANICAL, UNITS and RADIO.Bleach doseCheck a result that matters for safety with a second method.Metric or imperialChanges the units of every calculator.The calculators have nine groups, from water and power to radio. Hover or tap a number for its note.
KindDevice, part, project, measurement, firmware or note.RecordsFacts, part numbers and measurements in one place.Ask about this recordSends the record to INFO › QUESTIONS.Export notebookSaves the records as a file.NOTEBOOK keeps records of devices, parts, projects, measurements and firmware. Hover or tap a number for its note.
DRAW AND CHECKChecks open ends, duplicate names, outputs in conflict, voltage limits and required pins.SAVE SVGSaves the drawing. It is not a circuit simulation.WIRING draws a circuit from a text description and checks it. Hover or tap a number for its note.
Sunrise and moon phases for any place, tides for 3,852 stations, a calendar with every reminder, critical alerts that repeat until done, timers and world time. All worked out on your computer.
CALCULATEFind a place or use home, choose a date and click CALCULATE. TODAY uses today.Sun and twilightCivil dawn, sunrise, sunset and civil dusk at the place, in its own time zone.MoonThe moon tonight, how much is lit, moonrise and moonset.Next moon phasesThe next quarter, new and full moon.SeasonsThe equinoxes and solstices of the year.Sunrise, sunset, twilight, the moon and the seasons for any place. Hover or tap a number for its note.
Find a stationType a station name, a place or a position. M-ARK lists the stations nearest to it.DaysShow 1, 2, 3, 7 or 14 days.High and low waterThe curve and the times of high and low water. Calculated from astronomy only, so do not use them for navigation.The drive has 3,852 tide stations. Hover or tap a number for its note.
TODAYThe arrows change the month. TODAY goes back to this month.Red numberAn item on that day is overdue.Click a dayIts list shows above the calendar, with DONE, EDIT and SNOOZE.HolidaysHolidays of 250 countries and religious traditions.CALENDAR shows each day with its reminders. A red number is overdue. Hover or tap a number for its note.
Task and due dateType the task and choose when it is due.Repeat everyHours, days, weeks, months or years. 0 means one time.CRITICALFor a reminder that must not be missed, such as a medicine. Its alert comes every 15 minutes until it is done.SAVE REMINDERMaintenance tasks and stock make their own reminders too.Upcoming and overdueAll reminders, with HISTORY of when each was done.Reminders for seasonal work, medicines and checks. Hover or tap a number for its note.
Time zone mapMove the pointer over the map and the zone lights up with its time.Your local date and timeChange it to see what time it is elsewhere at that moment.NOWGoes back to the moving clock.The map shows the real time zone borders. Hover or tap a number for its note.
Text over Meshtastic mesh radios with no network. Send Morse by sound or by light, lay out the ground-to-air signals, spell clearly with the NATO alphabet, and look words up offline.
ConvertType text or Morse. It converts as you type, in both directions.SOUNDPlays the message. SAVE AS SOUND FILE makes a file to play into a radio.LIGHTFlashes the screen for signaling at night.Speed5 to 40 words per minute.KEYSend by hand. M-ARK reads what you send and learns your speed.MORSE is a full Morse station. Hover or tap a number for its note.
Today's five signsV require assistance, X require medical assistance, N no, Y yes, and an arrow for the direction you go.Careful with XX means require medical assistance today, and unable to proceed in the older code. If you are not sure, lay out SOS.PRINT THIS CARDPrints it for the go-bag.SIGNALS shows the code to lay out for a search aircraft. Hover or tap a number for its note.
TextType a name or a word to spell it out.Spelled outEach letter as its word, ready to read over a radio.ALPHABET spells text with the NATO spelling alphabet and the Morse of each letter. Hover or tap a number for its note.
Offline dictionaryType a word and click LOOK UP.Travel phrasebooksOpen the phrasebooks on the drive.The dictionary and the phrasebooks work offline. Hover or tap a number for its note.
REFRESH PORTSConnect a Meshtastic radio with a USB cable, then refresh.CONNECT USBM-ARK remembers the radio and connects again by itself.Connect over networkFor a radio on the Wi-Fi, type its address.MessagesUp to 200 letters to everyone or to one radio. New messages show in the status bar.MESH sends and receives text messages over Meshtastic radios, without internet or phone towers. Hover or tap a number for its note.
A dated journal, a scratchbook that saves as you type, and a media bank for your photos, video and audio. Everything exports as plain files any computer can read.
MonthsClick a month to show only its entries.+ NEW ENTRYChoose the date, type a title and the text, and click SAVE ENTRY.SearchFinds entries by title, text and date.EXPORT MY NOTESSaves the journal, the scratchbook, your marks and what the AI remembers as one zip, in plain Markdown.The journal is a dated record of events, decisions and observations. Hover or tap a number for its note.
PinnedPinned notes stay at the top of their own list.+ NEW NOTEM-ARK saves the note by itself 1.2 seconds after you stop typing.The scratchbook is for loose notes, lists and drafts. Hover or tap a number for its note.
IMPORTAdds files from the computer. You can also drag files onto the page.PULL FROM A FOLDERAdds all media from a folder.SearchClick a picture to crop it, draw on it or write on it. The original is always kept.The media bank keeps pictures, videos and audio for your journal, notes and documents. Hover or tap a number for its note.
Turn on sharing and the family scans a QR code. Their phones open M-ARK in the browser and use the library and the AI of the main computer. Each device gets a profile, from read-only to full access, and old browsers get a simple version that needs no JavaScript.
The same answersAsk from the phone. The AI runs on the host computer.SourcesEvery statement carries the number of its source.MENUThe nine menus open as large tiles. Each sub menu is one row that scrolls sideways.On a phone M-ARK shows the same answers, from the host computer over Wi-Fi. Hover or tap a number for its note.
CategoriesSwipe along the row to change the section.Expires nextWhat to use first.Needs doingLow stock and expiring items, each also a reminder.Check the stock from the storage room with a phone. Hover or tap a number for its note.
The map in your pocketTerrain, contour lines, your places and the danger areas, served from home.Layers, 3D and zoomThe same map controls as on the computer, sized for a thumb.Routes and the map work on a phone too. Hover or tap a number for its note.
Large menusTV mode switches on by itself in TV browsers, or add ?tv=1 to the address.Remote controlThe arrow keys move and Enter chooses.Ask from the sofaThe same questions and answers as on the computer.TV mode shows large controls for a remote control. Hover or tap a number for its note.
Ask a questionAsk, search, read and get directions with no JavaScript.Map and directionsDirections come as text.LARGER TEXTFor TVs and e-readers.Full versionOpens the full M-ARK on a device that can run it.Old browsers, TV browsers and e-readers get the simple version. It needs no JavaScript. Hover or tap a number for its note.
Drive health, downloads, access profiles, encryption, snapshots, a purge button and a sealed factory version you can always go back to. Switch off the menus you do not use. Let an assistant set up your household from an interview, then import it in one file.
Command deckClick the M-ARK logo at the top left to open it. Each card is a menu with its parts as links.Nine menusINFO, LIBRARY, MAP, SYS, CHRONO, LOG, WORKSHOP, INVENTORY and COMMS. Keys 1 to 9 open them from anywhere.Lines in redA red line needs your attention, for example maintenance that is overdue.Stock warningsINVENTORY says when stock has expired or runs out within two weeks.Status barThe bar at the bottom shows the AI, the model, memory, the drive and the number of things that need doing.The command deck shows all nine menus with their parts and one line on what is happening in each. Hover or tap a number for its note.
Drive healthThe drive, the records, the free space, the last snapshot and the search index.Plain linesNothing red means all is well. After QUIT says it is done, the drive can be unplugged.AIThe models in memory, how much they use and when they were used last.STATUS says whether the drive and your records are fine. Hover or tap a number for its note.
FilterFind a download by file name, address or error.StateShow all, or only those that are paused, finished or failed.DOWNLOAD HISTORYEverything that was downloaded.DOWNLOADS lists every download and its indexing. Hover or tap a number for its note.
FUNCTIONSRemove the tick from each menu or section you do not want. Nothing is deleted.SAVE FUNCTIONSThe menus close up. Tick a function again and it comes back with its data.SWITCH ALL ONBrings back everything.Switch off the menus and sections your household does not use. Hover or tap a number for its note.
Access profilesEach profile has a name, its own link, a QR code and a password if you set one.Storage roomA phone in the storage room can have INVENTORY and MAINTENANCE with write access and a password.+ NEW PROFILEStart from a preset, then choose OFF, READ or READ & WRITE for each menu.Devices signed inREVOKE signs out one device at once. A lost phone is revoked here.Access profiles say what each phone or computer may do. Hover or tap a number for its note.
StyleChoose the style, the colors and the font. Each color can be your own.UnitsMetric or imperial, each kind of measure on its own.ColoursSand on black is the default. Each color can be your own.STANDBYChoose the screen that shows when M-ARK is not in use, for example the clock, the moon and tide, or a dim red night clock.Change the look, the text size and the units on each device. Hover or tap a number for its note.
PURGEIn the top bar on every screen.Choose what to eraseEach line shows how many records it holds.Factory reset householdBefore you give the drive to another person, it erases everything and takes off locking.PURGE erases private data permanently. The library stays. Hover or tap a number for its note.
Factory versionThe original program. It is never changed, and M-ARK can always go back to it.+ NEW VERSIONA copy of the factory version that you or the maintenance AI can change and test.PluginsA plugin adds one page to one menu without changing the program.Go-bag checklistThe example plugin. It adds GO-BAG to INVENTORY.Make your own version of M-ARK and switch plugins on and off. Hover or tap a number for its note.
Import a packDrop a .zip, .csv or .json pack here. Every row is checked before anything is written.For your AI assistantGive THE GUIDE and THE PROMPT to ChatGPT, Claude or another assistant. It interviews you and returns a pack.CONNECT CLAUDEClaude Desktop can connect directly and import after you approve.ExportExport what M-ARK holds, so the assistant continues from it.Wanted downloadsDownloads an assistant suggests wait here. You approve each one.An outside AI assistant can set up M-ARK for your household and hand you one file to import. Hover or tap a number for its note.
InstructionType what you need, for example find PDFs that do not open, or how much space is left.SENDWhen the AI wants to change something, it shows APPROVAL NEEDED. Click APPROVE or DENY.NEW SESSIONEach session has at most 10 steps. NEW SESSION starts again.The maintenance AI looks after the library and the program. It reads freely and asks before it changes anything. Hover or tap a number for its note.
| Computers | Mac with Apple silicon. Windows 10 and 11. Linux in beta. |
|---|---|
| Memory | 8 GB with the AI off or the small model. 16 GB for the full model. |
| Disk | 60 GB for the core library, up to 600 GB for everything. Internal disk or any external drive. |
| Download | The app is about 400 MB. The library downloads from its publishers in the background, you pick the collections. |
| Phones and TVs | Any phone, tablet or TV on your Wi-Fi, in the browser, nothing to install. iPhone, Android, smart TVs. |
| License | One key for the computers in your household. Not tied to one machine. |
| Updates | App and library updates included. The app keeps working offline whatever happens to us. |
| Internet | Needed once, to install and download the library. Never after that. Offline mode blocks every connection. |
| Privacy | No account, no telemetry, no cloud. AES-256 encryption of your records. Purge erases for good. |
| Units | Imperial or metric for each kind of measure. Miles, gallons, pounds, Fahrenheit. |
| Languages | English interface. The AI answers in the language of the question. |
| Radios and GPS | Meshtastic text by USB or Wi-Fi. GPX export to Garmin, Gaia and phone map apps. Calendar export as .ics. |
| M-ARK | Library boxes | AI USB sticks | |
|---|---|---|---|
| Runs on your own computer | Yes | Needs their box | Yes |
| Answers with sources | Yes | Search only | Usually without sources |
| Offline routes and compass | Yes | No | No |
| Stock, rations, maintenance | Yes | No | Rarely |
| Mesh radio, Morse, signals | Yes | No | No |
| Every phone and TV in the house | Yes | Its own Wi-Fi | No |
| Price | $49 once | $150 to $500 | $25 to $100 |
Prices of the alternatives are typical US list prices in October 2026, no brand named.
Install it once with the internet on. From then on it needs nothing from anyone, including us.
Buy M-ARK, $49Everything on this page, including the AI, for $49 while M-ARK is in early access.
All sales are final, because downloaded software cannot be returned. Read the specifications, read the full manual after you install, and write to us with any doubt before you buy.
A download link and a license key by email within a minute. The app installs on your Mac or PC, you enter the key, pick the library collections you want, and M-ARK downloads them from the publishers. Everything on this page is in the one edition, including the AI.
No. M-ARK keeps the library on your computer’s own disk if there is room. An external SSD or hard drive is an option when you want the library out of the way or portable.
No. It installs like any app, the menus are numbered 1 to 9 and every screen has plain labels. If you can use a web browser, you can use M-ARK.
No. One payment. The app and your library keep working as they are, with no renewal and no account.
No. Switch it off in settings and no model is ever loaded. The library, search, readers, maps, stock, maintenance, time, comms and the phones work the same.
Yes. Turn on sharing and they scan a QR code. Their phones open M-ARK in the browser and use the library and the AI of the main computer, on your Wi-Fi or on the laptop’s own hotspot when the router is down.
No. M-ARK puts the medical references in your hands, opens them at the right page and summarizes what they say, with the source shown. It does not replace a doctor.
No. Downloaded software cannot be returned, so all sales are final and you agree to that at checkout. Read the specifications above, read the full manual, and write to us with any question before you buy. We answer honestly, including when M-ARK is not for you.
No. M-ARK installs like any app, asks which fields you want, and downloads the rest itself. The menus are numbered 1 to 9 and every screen has plain labels. If you can use a web browser, you can use M-ARK.
No. M-ARK keeps the library on your computer’s own disk if there is room. An external SSD or hard drive is an option when you want the library out of the way, or something you can carry to another computer.
The app for Mac, Windows and Linux, a license key for the computers in your household, every function on this page including the AI, and 12 months of updates to the app and the library index. The library itself is downloaded free from its publishers.
No. One payment. After the first year the app and your library keep working exactly as they are.
No. M-ARK is downloaded software that cannot be returned, so all sales are final, and you agree to that at checkout. Check the requirements above before you buy, and if you are not sure your computer qualifies, write to us first and we will tell you honestly.
The Mac version is the one we use every day and test most. The Windows build is newer and is being tested on more hardware. Linux is in beta. Three guide sets in the library (foraging, medicines, regional packs) are marked Draft until a professional has reviewed them.
Macs with Apple silicon, Windows 10 and 11 PCs, and Linux in beta. 8 GB of memory is enough with the AI off or with the small model. 16 GB runs the full model. Phones, tablets and TVs use it through the browser from that computer.
Not while you are not using it. M-ARK runs only when you open it. The AI model is loaded into memory when you ask a question and can be unloaded with one click. Downloads and indexing run in the background and can be paused.
You choose. The medical, water, food and repair core fits in about 60 GB. The whole library with the world map and terrain is about 600 GB, so a 1 TB disk or drive is comfortable. You can add or remove collections at any time.
No. It runs from your user folder, installs no drivers, and changes no system settings. Deleting the folder removes it completely.
A laptop runs M-ARK for hours on its battery, longer with the AI off. Any small solar panel or power bank that charges a laptop keeps it going. Your records are saved as you go, and a snapshot is taken at every quit and once a day.
Yes. The license is not tied to one machine. Copy the M-ARK folder, or let the app copy itself and leave your records behind, then enter your key.
No. Switch USE THE AI off in settings and no model is ever loaded. Everything else on this page works the same: the library, search, readers, maps, stock, maintenance, time, comms and the phones.
It searches your library by words and by meaning, takes the best passages, and writes the answer from those passages only, with a number on every statement that opens the page. Answers about health, electricity, gas, water and chemicals are read a second time against the sources. It says so when the library does not cover a question.
Trust the page it cites, not the summary. That is why every statement carries a number and the page is one click away. Numbers that appear in no source are listed under the answer. Like any AI it can misread a passage, which is why it never answers from memory alone.
No. The model runs on your processor. With the Wi-Fi off, the answers come just the same. Your questions are kept on your computer only, and you can purge them for good.
On a Mac with Apple silicon and 16 GB, seconds to a minute for an answer. With 8 GB, M-ARK uses a smaller, quicker model. On Windows and Linux the AI runs on the processor and is slower, so the Fast model suits them.
Qwen 3 8B and Llama 3.2 3B come with it, with a rerank model for search. You can add any GGUF model from a file or from Hugging Face, and choose separate models for fast answers, code and maintenance.
From open sources, such as public domain and government field manuals, OpenStreetMap, GeoNames, open encyclopedias and question-and-answer sites, downloaded by the app from the publishers under their own licenses. Your own PDFs and EPUBs go on the same shelves.
No. M-ARK puts the medical references in your hands, opens them at the right page and summarizes what they say, with the source shown. It does not replace a doctor. Every book shows its year, and older medical books are flagged so you compare them with the newer ones.
Yes. Drop PDFs and DRM-free EPUBs into the library and they are searched, cited and readable like everything else. TEACH lets you write your own documents into it, with pictures.
The app checks for new editions of the archives when you are online and asks before downloading. Your own additions and notes are never touched.
Yes. Untick AI USES IT on any book, or a whole subject, to keep outdated or misleading material out of answers and search while it stays on the shelf.
The map, place search and terrain cover the whole world. Turn-by-turn routes cover 746 of the world’s 1,142 map squares of 5 by 5 degrees, including nearly all of the United States and Canada, and the app shows which squares have routes before you plan.
Yes. Miles, feet, gallons, pounds and Fahrenheit, each kind of measure set on its own. The map, routes, tides, compass and every calculator follow.
Yes. PRINT AREA puts the map on one sheet with a coordinate grid, scale bar, north arrow, declination and your numbered places, and routes print with every turn and its coordinates.
A laptop has no GPS, so M-ARK fixes your position from compass bearings to landmarks you can see, or from a position you type. A phone on the same Wi-Fi can share its position when you open M-ARK on it.
Yes. Turn on sharing and they scan a QR code. Their phones open M-ARK in the browser and use the library and the AI of the main computer. Nothing to install, and it works on the laptop’s own hotspot when the router is down.
Yes. Each device gets an access profile, menu by menu: off, read, or read and write. A kids’ library profile, a storage-room profile for the pantry phone, a read-only profile for guests.
Yes. TV mode shows large controls for a remote, and old browsers and e-readers get a simple version that needs no JavaScript.
Yes. People, stock, journal and questions stay on your computer. Add a password, encrypt the records with AES-256, give each phone its own profile, and purge anything for good when you want.
No. There is no account and no telemetry. The app connects only when you ask it to download, check for updates, or search the web in RESEARCH. OFFLINE MODE blocks all of it with one switch.
A snapshot of your records is taken at every quit and once a day, the last seven are kept, and COPY MY RECORDS TO ANOTHER DRIVE makes a second copy with one click. The library can be downloaded again.
The original program is sealed as a factory version with a checksum on every file. A version that does not start within 90 seconds is stopped and the last working one starts by itself.
Press ? on any screen for the shortcuts, open the manual from SYS, or ask the maintenance AI to find what is wrong. Beyond that, write to us and a person answers within two business days.
There is no trial, because the library is downloaded to your own computer and cannot be taken back. This page shows every screen instead. If a question is not answered here, ask us before you buy.
Pinch or scroll to zoom, double-tap to reset