Ark Home

Not for the what if.
For the when.

A complete library of human knowledge — medical references, field manuals, encyclopedias, classic literature — that works without internet, without the grid, and without anyone's permission.

Offline forever
Runs on solar
Humanity's knowledge
One-time payment  ·  Flash to your Raspberry Pi  ·  14-day refund guarantee
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What's on the shelf.

Not "an assistant." A library, with something that knows how to read it.

Reference

  • Full English Wikipedia
  • Encyclopaedia Britannica, 11th ed.
  • Wiktionary, Wikibooks, Wikisource
  • Wikiversity course library

Survival & Medical

  • Where There Is No Doctor
  • Where There Is No Dentist
  • US Army field manual library
  • Survivor Library core set

Learning

  • Khan Academy lessons, full text
  • Public-domain science textbooks
  • arXiv foundational papers (Full tier)

Literature & History

  • Project Gutenberg complete canon
  • Public-domain philosophy & history
  • Classic translations in 6 languages

Three sizes. One library.

Pick the tier that fits your hardware. Everything runs entirely offline once installed.

Lite
$29 one-time
Raspberry Pi 5 4GB or equivalent entry SBC.
~10 GB download.
  • Wikipedia Simple English
  • Hesperian medical books
  • Survivor Library core
  • Field manuals + Gutenberg
  • Compact language model
Full
$99 one-time
Orange Pi 5 Plus 16GB or mini PC.
~100 GB download.
  • Everything in Standard
  • arXiv foundational papers
  • Library of Congress selections
  • Foreign-language Wikipedia mirrors
  • Largest available language model

How it works.

1

Buy and download.

You receive a download link by email. The image is a compressed archive — one file, with everything inside.

2

Flash it to your device.

Follow the included setup guide. Works on a Raspberry Pi 5, Orange Pi 5 Plus, or any compatible single-board computer. No technical background required.

3

Plug in, power up, ask anything.

Open a browser on any device connected to your local network. Type a question. Get an answer, grounded in real sources, with citations you can open and read.

4

Lose the signal. It still works.

Once installed, Ark runs on a small solar panel or battery. Nothing leaves the device. Nothing requires a connection. Ever.

What Ark will never do.

Questions.

What hardware do I need?

Standard ($49): A Raspberry Pi 5 with 8GB RAM is the recommended choice. You'll also need a microSD card of at least 64GB (or a USB SSD for the Full tier), a power supply, and a case with a USB port for a solar charger if you want off-grid operation.

Lite ($29): Works on a Raspberry Pi 5 4GB, or comparable entry-level single-board computers.

Full ($99): Requires an Orange Pi 5 Plus with 16GB RAM, or an x86 mini PC with at least 16GB RAM and 256GB SSD storage.

Does it really work without internet?

Yes, completely. Once you've downloaded and flashed the image, it runs entirely on your local hardware. There are no API calls, no cloud lookups, no license pings. The library and the engine that searches it are both stored on your device.

You can run it on a solar panel, a car battery, or a hand-crank generator. The only thing it needs is power.

How do I ask questions? Do I need a keyboard?

Ark runs a local web interface accessible from any browser on your home or local network — a phone, tablet, laptop, or desktop. You type a question into one box and get an answer back, with citations pointing to the exact source documents.

No special keyboard, no app to install. If you can open a browser, you can use Ark.

How is this different from downloading Wikipedia?

Downloading Wikipedia gives you a searchable archive. Ark gives you a queryable library: you ask a question in plain language and get a synthesized answer drawn from multiple sources — Wikipedia, field manuals, medical references, and more — with the source text available to verify.

Ask "how do I treat a deep wound without a hospital?" and Ark searches its medical library, retrieves the relevant passages from Where There Is No Doctor and army field medicine references, and gives you a clear step-by-step answer with citations. A Wikipedia download would give you a search bar and raw article text.

What happens after I pay?

You'll receive an email within a few minutes with a download link (valid for 48 hours) and a SHA256 checksum to verify the file. The email also includes the setup guide for your tier.

If you need to re-download after the link expires, email ark@solidwordco.com with your order confirmation and we'll issue a new link.

What is the refund policy?

14-day no-questions refund if you haven't downloaded the file. Email ark@solidwordco.com with your order number. If the download link has been used, we ask that you include a reason — we want to understand what didn't work.

Full refund policy: ark.solidwordco.com/legal/refund-policy

Can I install it on multiple devices?

One license covers personal and household use — one installation at a time. If you're deploying for a school, clinic, or organization with multiple devices, contact us for institutional licensing.

I run a school / clinic / NGO. Can I deploy this at scale?

Yes. Institutional deployments are available, and we'll work with you on pricing, supported hardware, and corpus customization. Email ark@solidwordco.com with "Institutional" in the subject line.

A shelter for what we know.

Not for the what if. For the when.

One-time payment  ·  Instant download  ·  14-day refund guarantee

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