●Zima: Offline AI
iOS & Android  ·  100% On-Device  ·  No Account

The AI that never
leaves your phone.

A full AI assistant that runs entirely on your phone. No internet. No server. No data sent anywhere.

App Store Google Play
Zima Offline AI chat interface on iPhone
100%
On-Device
3
Model Sizes
8
Personalities
Zero
Data Sent
Privacy you can verify

When airplane mode is on, it still works.

Because there's nothing to connect to. Every model runs fully on your device — no API calls, no telemetry, no background sync. Your conversations never leave your phone.

Settings
✈️ Airplane Mode
What's the speed of light?
The speed of light in a vacuum is approximately 299,792,458 meters per second — often rounded to 3 × 10⁸ m/s.
Responding on-device  ·  No network
Three models for any device

Pick the model that fits your phone.

Start free with Nano — fast, capable, and tiny enough for any iPhone. Upgrade to Plus for richer reasoning, or go full Pro for the most powerful on-device experience available. All downloaded once. All run offline forever.

Choose Model
Nano
559 MB
Free
⚡ Fast
Plus
2.7 GB
Downloading
1.84 GB / 2.7 GB
Pro
4.7 GB
Available
🧠 Most Capable
Personalities

Pick your AI. Or build your own.

Eight preset personalities ship out of the box — or write any system prompt you want. Your AI, your rules.

🤝 Helpful
Clear, direct, and informative. The default assistant you reach for first.
🎩 The Butler
Formal and precise. "Of course, sir. Allow me to elaborate."
☁️ The Pessimist
Technically correct, quietly convinced it will end badly.
📋 The Intern
Eager, helpful, occasionally over-literal. Always trying.
🔍 The Detective
Methodical. Every answer is a deduction. Nothing is coincidence.
📜 The Bard
Prose and poetry, metaphor and meaning. Speaks in full color.
🔭 The Theorist
Hypotheses, first principles, second-order effects. Thinks out loud.
🏄 The Surfer
Laid back, vibes-first. Still surprisingly knowledgeable.
Everything you need

No compromises.

⚡

Streaming Responses

Words appear word-by-word as the model generates them. Stop mid-stream or regenerate any response instantly.

📝

Markdown + Code

Full markdown rendering with syntax-labeled code blocks. Ask for code — get back formatted, readable output.

💬

Conversation History

All your chats saved locally with full-text search. Find anything you talked about without a cloud account.

📤

Export & Share

Long-press to copy any message. Share individual responses or export an entire conversation in one tap.

No account. No login. Just AI.

Download. Start talking.

Nano model is free. Download, open, and start chatting — offline, immediately.

Download on App Store Google Play