Onyx - Private AI Chat
Run AI offline, fully private
Only for iPhone
Free · Designed for iPhone. Not verified for macOS.
iPhone
Your AI, fully private. Onyx runs powerful AI right on your iPhone, even offline. No account, no cloud, nothing shared. Ask anything, in total privacy.
Meet Onyx, the private AI assistant that runs entirely on your iPhone.
Ask anything. Get instant answers. No account, no internet, nothing shared.
A REAL AI ASSISTANT, THE ONE YOU ALREADY KNOW
Ask questions, brainstorm ideas, write emails and messages, summarize long texts, translate languages, get explanations on any topic, fix your code, prepare for an interview, plan a trip. Onyx does everything you expect from a modern AI chat, with real conversations and follow-up questions.
100% PRIVATE, BY DESIGN
Every question and answer stays on your iPhone. Nothing is sent to our servers, and your data is never used. Not even we can see what you ask.
WORKS COMPLETELY OFFLINE
Download an AI model once and use it anywhere. On a flight, in the subway, abroad with no signal. Onyx keeps working when other AI apps stop.
HUNDREDS OF MODELS, ONE PERFECT FOR YOU
Llama, Qwen, Gemma, and many more models, all free. Onyx analyzes your iPhone and highlights the ones that will run best on it, so you get the most capable assistant without guessing.
FAST AND BEAUTIFUL
Answers appear in real time as the AI writes. Clean formatting, elegant design, smooth from start to finish.
No subscription. No data collection. Just you and a powerful AI that respects you.
Download Onyx and take back control of your AI.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, David Azancot, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Diagnostics
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- David Azancot
- Size
- 30.2 MB
- Category
- Productivity
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - Mac
Requires macOS 15.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.0 or later.
- iPhone
- Languages
- English and French
- Age Rating
4+
- 4+
- Copyright
- © Apps4fun 2026