OfflineVault

A Mac app for people who prepare

Answers when the internet is off.

Wikipedia, the field manuals, world maps and your own videos, on your Mac. An assistant that answers only from them and cites the page.

Download for Mac See pricing
  • Apple Silicon, macOS 14 or later
  • GPL-3.0 app and engine
  • Runs with Wi-Fi off
  • Free tier, no account
LIBRARYChatScenariosReferenceDocumentsMapsVideosSaved pagesMANAGEReadinessBackupShare on Wi-FiOffline · library on external SSDChatQwen3-4B · answers only from your librarySearch library⌘KHow do I make creek water safe to drink?Boil it if you can. If you can't, use bleach. A filter on its own is not enough.1. Boil it for one minute. Above 6,500 feet, boil for three minutes. Let it cool.[1]2. No way to boil: 8 drops of unscented household bleach per gallon, 16 if the water is cloudy. Mix, wait 30minutes.[1]3. Per quart, the Army manual says 2 drops of 5.25% bleach and a 30 minute wait, 60 if cold and cloudy.[2]4. Most portable filters remove parasites, not bacteria or viruses. Filtered water may still need treating.[1]SOURCES[1]Make Water Safe During an EmergencyCDC · Document · page 1Boil your water for 1 minute. At elevations above 6,500 feet, boil for 3 minutes. … Add 8 drops or a little less than 1/8 of a t…[2]ATP 3-50.21 SurvivalUS Army · Document · page 69Place 2 drops of chlorine bleach (5.25 percent sodium hypochlorite) for 1 quart of water and let it rest for 30 minutes. If col…Ask your library
How do I make creek water safe to drink?Boil it if you can. If you can't, use bleach. A filter on its own is notenough.1. Boil it for one minute. Above 6,500 feet, boil for three minutes. Let itcool.[1]2. No way to boil: 8 drops of unscented household bleach per gallon, 16if the water is cloudy. Mix, wait 30 minutes.[1]3. Per quart, the Army manual says 2 drops of 5.25% bleach and a 30minute wait, 60 if cold and cloudy.[2]4. Most portable filters remove parasites, not bacteria or viruses.Filtered water may still need treating.[1]SOURCES[1]Make Water Safe During an EmergencyCDC · Document · page 1Boil your water for 1 minute. At elevations above 6,500 feet, boil for 3minutes. … Add 8 drops or a little less than 1/8 of a teaspoon of 5%-9% uns…[2]ATP 3-50.21 SurvivalUS Army · Document · page 69Place 2 drops of chlorine bleach (5.25 percent sodium hypochlorite) for 1quart of water and let it rest for 30 minutes. If cold and cloudy, wait 60 min…

Kiwix is free. So is the app.

You can build this shelf yourself from public sources and pay nothing. What you pay for is having it built, checked and kept current for you.

Open source

The app and its engine are GPL-3.0. Use them with your own content, free.

Paid shelf

A subscription buys a checked, signed library, refreshed every month.

Never locks

Stop paying and updates stop. Everything you downloaded keeps working and exports.

The library

What is on the shelf

Reference books through Kiwix, public-domain manuals indexed page by page, and whatever you add. Every book shows the date of its snapshot.

Books
Wikipedia in three sizes: the top 50,000 articles, every article as text (about 49 GB), or everything with pictures (about 119 GB). WikiMed, WikEM, MDWiki, US military medicine manuals, Appropedia, Ready.gov, water treatment, food storage, knots, the CIA World Factbook, Project Gutenberg on medicine and agriculture, and Stack Exchange archives for sustainable living, outdoors, gardening, DIY and ham radio.
Manuals
FEMA Are You Ready?, FM 21-76 Survival, FM 4-25.11 First Aid, ATP 3-50.21 Survival, FM 21-10 Field Hygiene, the USDA Complete Guide to Home Canning and CDC water guidance. Fetched for you, searchable by page.
Yours
Drop in PDFs and EPUBs, or a whole folder. Duplicates are skipped and subjects assigned. Save web pages as single files. Keep YouTube channels or playlists with their subtitles.
Maps
The whole world, offline. Street detail for the area on screen in one click, or the full planet at street level, about 130 GB.
ReferenceBooksDocumentsVideosFilter booksBOOKSNAPSHOTSTATUSWikipedia · top 50,000 articles2026-09InstalledWikipedia · every article, text2026-09InstalledWikipedia · everything with pictures2026-09AvailableWikiMed2026-10InstalledWikEM2026-10InstalledMDWiki2026-10InstalledUS military medicine manuals2026-08InstalledAppropedia2026-07InstalledReady.gov2026-06InstalledWater treatment2026-05InstalledStack Exchange · outdoors2021-06pre-AIInstalledStack Exchange · ham radio2026-03AvailableCIA World Factbook2026-01InstalledProject Gutenberg · medicine2019-11pre-AIInstalled

The assistant

Cited, or declined.

It answers only from the library, with numbered citations. Each citation is a card with the document, the page and the exact excerpt. Click it and the page opens.

Every number is a page

Medical, electrical and structural answers end with a reminder to read the source itself.

Improvised tourniquet from a belt, step by step2. Around the limb, between the wound and the trunk. Never over awound, a fracture or a joint. Upper arm, or above the knee.[2][2]FM 4-25.11 First AidOpen pageDocument · page 47Place the tourniquet around the limb, between the wound and thebody trunk … Never place it directly over a wound, a fracture, or joint.Medical topic. Read the cited source itself, not only this summary.

It says no

Mushrooms, wild plants, drug doses. With no source to stand on, it refuses and says why.

Can I eat this mushroom? White cap, ring on the stem.I won't guess at this.Nothing in your library identifies a mushroom from a description, and awrong answer here can kill. The survival manual's rule on mushroomsis below instead.[1]FM 21-76 SurvivalOpen pageDocument · page 100Do not eat mushrooms in a survival situation! The only way to tell if amushroom is edible is by positive identification. There is no room fo…

Runs on your Mac with llama.cpp. Qwen3-4B on 8 GB, Qwen3-8B on 16 GB, Meta Muse Glimmer 30B on 32 GB.

The rest of the app

Everything works unplugged.

Each part runs with Wi-Fi off. The drill is there so you can prove it before you need it.

One search, everything

Cmd-K searches books, PDF pages, saved pages and video transcripts in one ranked list.

hypothermia child⌘KHypothermiaReference · WikiMedFM 4-25.11 First AidUS Army · Document · page 124A sign that is noticed immediately is shivering … their speech may be…Cold weather first aidVideo · 14:02when the shivering stops, that is the sign to act, not to relaxHypothermia in childrenSaved page · 2026-08↑↓ select ↩ open ⌘↩ ask the assistant

The whole world, offline

Pan anywhere. Click for coordinates, type them to jump. Download street detail for the area on screen.

39.74, -104.99GoMARKER39.74000, -104.9900039°44'24"N 104°59'24"WDownload street detail for this view

Videos with transcripts

Add a channel or playlist and keep what you choose. The transcript sits beside the player, searchable, and the assistant can quote it.

…eight drops a gallon, then wait.Field water treatment, step by stepSaved 2026-09-14 · 12:40 · subtitles onbleach1 of 16:02Scoop from the surface,away from the bank.6:31If you can boil, boil. One fullminute.6:48Unscented bleach, eightdrops a gallon.7:03Stir, then let it stand thirtyminutes.

Cards for the first hour

Grid down, no safe water, wildfire, hurricane, earthquake, severe bleeding, hypothermia, nuclear, go-bag. Every line checks itself against the library. Printable.

No safe water2 of 6 done · tap the magnifier to open a line's sourcePrintStop drinking from the tap until the notice lifts.Stored water first. One gallon of drinking water per person perday.Boil other water for one minute. Above 6,500 feet, threeminutes.CDC, Make Water Safe During an Emergency, page 1No stove: 8 drops of unscented bleach per gallon, 16 if cloudy.Wait 30 minutes.Fill the bathtub and clean containers while pressure lasts.Label every treated container with the date.

A drill that proves it

One button checks every book, every file, maps, the assistant, backup age and free space. Amber items get a fix button.

ReadinessLast run today, with Wi-Fi offRun againHelpersKiwix, llama.cpp, ffmpeg and yt-dlp presentReference booksEvery book opens and answers a searchDocuments and videosEvery file present, checksums matchMapsWorld map renders with no networkAssistantAnswered a library question with a citationBackupLast verified 94 days agoBack up nowFree spaceEnough for the next monthly refreshRosettaInstalled

Phones on your Wi-Fi

A read-only copy of the library for the household, over the local network. Off by default.

Share on this Wi-FiScan with a phone camera, or openhttp://192.168.1.24:8780Read-only. Books, manuals, saved pagesand videos, with search. Only devices onthis network. Off by default.

Pricing

Pay for the shelf, not the app.

Stop paying and updates stop. Everything you downloaded keeps working, forever, and you can export it.

Free$0

The whole app, GPL-3.0. Bring your own content.

Download for Mac

Core

$79/year

or $9.99 a month

  • WikiMed, WikEM, military medicine
  • Wikipedia's top articles
  • Government manual pack
  • World overview map
  • 4B assistant model
  • Monthly refresh
  • Email support
Buy Core

Household

$129/year

everything in Core, plus

  • Full Wikipedia with pictures
  • 130 GB street-level world map
  • Bigger assistant models
  • Wi-Fi sharing for the household
Buy Household

Founder, $299 once, at launch only. Three years of Household, Core for life, your name in the credits. Join as a founder.

When you stop paying

Updates stop. Nothing else changes. The books, the manuals, the maps and the assistant keep working from your drive, and you can export all of it.

Core ended. Updates paused. Everything keeps working.Reference booksworkingDocumentsworkingMapsworkingAssistantworkingExport the whole library

Download

Get the app.

The whole app is free. Open it, add your own books and videos, or buy a plan and the shelf fills itself.

Download for Mac
  • macOS 14 or later, Apple Silicon
  • Free tier, no account
The first time you open it

This first build is not yet notarised by Apple, so macOS refuses it the first time. Once:

  1. Open OfflineVault from Applications. macOS says it could not verify the app. Click Done.
  2. Open System Settings, Privacy & Security, scroll to Security and click Open Anyway, then Open. After that it opens like any other app. On macOS 14, Control-click the app and choose Open instead.

Late beta.

Leave an email and the plan you have in mind. One message when there is real news, nothing else.

Questions

Asked before you ask.

Kiwix is free. Why pay?

You can assemble the library yourself. Kiwix, llama.cpp and the manuals are all public, and the app is free and open for exactly that. The subscription is the checked, signed shelf, kept current every month, so you do not have to.

What happens when I stop paying?

Updates stop. Everything you downloaded keeps working, with no time limit, and you can export all of it.

Does it really work with no internet?

Yes. After the first download every part runs on your Mac. The readiness drill exists so you can prove it yourself with Wi-Fi off.

Can I trust it with medical questions?

Treat it as a librarian, not a doctor. It answers only from sources you can open, cites the page, flags medical topics and refuses where a guess is dangerous. Then read the page.

How do I activate?

Pay with the button on a plan. The page after payment shows your licence key and an Open in OfflineVault button. Click it, or paste the key into Settings, Licence, Activate on each Mac. Core covers 2 Macs, Household and Founder 6.

I lost my key

Enter the email you paid with at /recover. If that fails, reply to your Stripe receipt and we will send it again.

What Mac do I need?

Apple Silicon, macOS 14 or later. 8 GB of memory runs the 4B model, 16 GB the 8B, 32 GB the 30B. The complete library wants an external SSD. Unplug the drive and the app waits for it.

macOS says it could not verify the app

This first build is not yet notarised by Apple. Open the app once and click Done, then go to System Settings, Privacy & Security, scroll to Security and click Open Anyway. On macOS 14, Control-click the app in Applications and choose Open. You do this once. A notarised build replaces it when Apple finishes checking, and the app updates itself.