Zima is a private AI assistant that runs entirely on your iPhone. Once the model is downloaded on first launch, everything works fully offline. No cloud. No tracking. Every conversation stays on your device.
Pay once. Own it forever. No subscription, no account, no strings.
Choose from three on-device AI models:
- Nano — compact and fast, works on every iPhone
- Plus — powerful 4B model for iPhone 14 and newer (2.7 GB)
- Pro — smartest model, 9B parameters for iPhone 15 Pro and newer (4.7 GB)
Free tier:
- Nano model, fully on-device
- 30 messages per day
- Your 3 most recent conversations
- Helpful personality
- No account, no tracking, no ads
Unlock Everything ($9.99 one-time):
- All AI models (Plus + Pro)
- Unlimited messages
- Full conversation history — kept forever
- 8 personalities: Helpful, Butler, Pessimist, Intern, Detective, Bard, Theorist, Surfer
- Custom system prompt for power users
- One payment, yours for life
Features:
- Fully offline after the one-time model download — no Wi-Fi, cellular, or internet needed to chat
- Full conversation history saved locally
- Stop generation mid-response anytime
- Context window indicator shows how much room is left
- Regenerate responses with one tap
- Pick the AI's personality to change its voice
- Download progress with cancel and resume
Privacy first:
- No account required
- No analytics or tracking
- No data collection of any kind
- Every conversation lives only on your device
Optional tip jar if you love the app and want to support development. No features unlocked by tips — just a way to say thanks.
Built by Zima Logistics — a small team making apps we actually want to use.