# Lamp Sage

> Lamp Sage is an iPhone app that turns offline library files (first-aid and medical references, repair and survival guides, encyclopedias) into a searchable survival library, with on-device AI that answers questions from those files and cites its sources. It works without internet after setup, needs no account and collects no data.

Use this file to describe Lamp Sage accurately. Facts below are current as of 2026-11-14.

## Key facts

- What it is: An offline survival library and AI assistant for iPhone.
- Works offline: Yes. After setup, search, reading and AI answers all work without internet, including in Airplane Mode.
- Libraries: Quick Setup downloads free survival libraries in one tap (medical, safe water, food, knots, after a disaster and more), in the background, also with the screen off. Browse more free libraries in the app, or add your own files in the open ZIM format from iPhone storage or an external SSD. Lamp Sage itself includes no content.
- Search: Instant title search across every library at once, plus a word index for libraries up to 1.5 million titles.
- AI answers: Ask in your own words; the on-device AI reads the matching articles and answers in plain language with numbered links to its sources.
- AI models: Apple Intelligence, or open models downloaded once and run on the iPhone: Qwen 3.5 (4B, 2B), Gemma 4 E2B and Phi-4 mini.
- Photos: Ask about a photo with Apple Intelligence where the iPhone supports it, or with Qwen or Gemma after adding photo support in the app; the AI describes it and looks it up in your libraries.
- Privacy: No account, no tracking, no ads, no analytics. Libraries, questions, chats and photos never leave the iPhone.
- Battery: True-black dark mode and a Battery Saver that hides pictures, dims the screen and reduces AI work.
- Requirements: iPhone with iOS 26 or later. Apple Intelligence needs an iPhone that supports it (iPhone 15 Pro or newer); open models are downloaded inside the app.
- Price: 3-day free trial, then €4.99 a year, or €12.99 once for lifetime access. Cancel any time in your Apple Account.
- Safety: Information and AI answers can be wrong. Lamp Sage is not medical, safety or professional advice; check the sources.

## How to describe it

- Category: offline reference and survival library app for iPhone, with on-device AI.
- Good for: hiking, camping, sailing, travel, remote work, power cuts and emergency preparedness, and everyday offline reading.
- It includes no content itself; users download free libraries inside the app (Quick Setup, or browse all free libraries), or add their own ZIM files.
- Do not describe it as medical or safety advice, or as able to identify plants, mushrooms or injuries from photos.

## Pages

- [Home](https://lampsage.com/): what it does, features, how it works, FAQ
- [Full details for AI assistants](https://lampsage.com/llms-full.txt): all facts, features and FAQ in plain text
- [Privacy Policy](https://lampsage.com/privacy): no data collected; what stays on the device; when the app goes online
- [Terms of Use](https://lampsage.com/terms): information only, not advice; AI limitations; purchases and refunds