# Bisi² - Offline AI Assistant — Private AI. No internet needed

> Private AI. No internet needed (iPhone/iPad app by Roman Labis.)

- Source: https://appshunter.io/ios/app/bisi-offline-ai-assistant/id6799656521 (this page in markdown: same URL + `.md`)
- Developer: [Roman Labis](https://appshunter.io/developer/6799656523)
- Category: Reference, Productivity
- Price: Free with in-app purchases
- Age rating: 12+
- Requires: iOS 16.0 · 144 MB
- Languages: American English
- Released: 2026-08-27
- Data updated: 2026-10-02

## What is Bisi²?

Bisi² is an AI assistant that runs entirely on your phone. No internet,
no cloud, no account. Ask it anything in airplane mode, in a
blackout, on a mountain, off-grid.

WORKS WHERE THE INTERNET DOESN'T
The AI model runs on your device. Answers draw on real sources in your
offline library, and the app lists the books it consulted right under
the answer.

POWERED BY GEMMA 4, MULTIMODAL ON DEVICE
Bisi² runs Google's open Gemma 4 model on your phone. Photograph the
plant you can't name or the part you need to replace and ask about the
picture. Ask by voice when your hands are full. Photos and recordings
stay on the device.

AN EXPERT SURVIVAL & PREPAREDNESS LIBRARY
One curated pack: 283 field-guide articles with 90+ illustrations across
13 topics - general survival skills, first aid, water treatment, food
storage, off-grid cooking, energy and fire, shelter, edible and
poisonous plants, animals and fishing, gardening, emergency radio,
personal and home safety, and civil defense.
Every article is grounded in authoritative
sources (EPA, CDC, FEMA, USDA, current first-aid guidance) and checked
against today's recommendations, including the places where old field
manuals are dangerously out of date.

OFFLINE WIKIPEDIA & FREE TEXTBOOKS
Add offline Wikipedia - from a compact top-articles pack up to the full
text of the 50,000 most-read articles, or all of Simple English
Wikipedia - plus twelve free OpenStax university textbooks: biology,
chemistry, physics, calculus, astronomy, microbiology and more, all
free.

BRING YOUR OWN BOOKS
Import an EPUB, MOBI, PDF, Word or Excel file, or a ZIP of HTML pages
and it becomes a searchable part of your library the assistant can
quote and cite - converted on the device, never uploaded. A one-time
unlock.

PRIVATE BY ARCHITECTURE
Your questions, chats, documents and location never leave your phone -
there is no server that could receive them. No analytics, no ads, no
accounts. The privacy policy is short because there is almost nothing to
disclose.

BUILT FOR REAL CONDITIONS
• Works fully offline after the initial model download
• Multimodal input: photos and voice, on the device
• Library sources consulted are listed under answers
• Figures and diagrams shown right in the chat
• Personal memories: it remembers your gear, allergies and notes -
  locally
• One-time purchases. No subscriptions.

Bisi² provides general reference information, not professional medical
advice. In an emergency, call your local emergency number.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Survival and Preparedness Pack | $9.99 | one-time |
| Bring Your Own Book Unlock | $9.99 | one-time |
| Survival Pack + BYOB | $14.99 | one-time |


## Is Bisi² safe?

Not enough ratings yet to assess Bisi².

## Is Bisi² legit?

Bisi² - Offline AI Assistant has limited verification signals. The AppsHunter Legitimacy Score for Bisi² is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.5.0 — 2026-09-20

Dictation now waits two seconds of silence before it stops, so you have time to start talking.
Model and library downloads come from a global content network, so they start faster and resume more reliably.
Updated the app's building blocks across the board for stability.

### 1.4.0 — 2026-09-11

• Copy button on every answer: one tap puts the full reply on your clipboard, ready to paste.
• Select across the whole answer: drag over paragraphs and lists to grab just the part you need.
• Updated AI engine.

### 1.3.0 — 2026-09-10

• Right-to-left language support: books written right to left import in the correct reading order, search finds their text, and chat follows the text direction.
• New Thinking switch in Settings. Off: answers start sooner. On: better results on hard questions. Takes effect in your next chat.

### 1.2.0 — 2026-09-08

PDF books with a built-in table of contents now import as real chapters, like EPUBs already do. PDFs without one get cleaner section titles, and manuals full of tables stop turning table rows into headings. Smaller fixes across import and search.

### 1.1.0 — 2026-09-01

Import Word and Excel files. A .docx or .xlsx now converts into a searchable pack the same way EPUB and PDF do: keep it in My Books for every chat, or attach it to a single conversation. Headings, tables and pictures come across, and each spreadsheet sheet becomes its own section.

The conversion runs on your device. Nothing is uploaded.

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## Related topics

[offline learning](https://appshunter.io/ios/topics/offline-learning) · [donesafe offline](https://appshunter.io/ios/topics/donesafe-offline) · [offline ai assistant](https://appshunter.io/ios/topics/offline-ai-assistant)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-02.*