Atomic Chat is a private AI assistant that runs entirely on your iPhone or iPad. No accounts, no sign-ups, no cloud servers. Every conversation stays on your device.
WHY ATOMIC CHAT
- 100% on-device AI — models run locally using your device's Neural Engine
- Complete privacy — your chats never leave your iPhone
- Works offline — no internet required after initial model download
- No account needed — open the app and start chatting
- Free to use — no subscriptions, no hidden fees
WHAT YOU CAN DO
- Ask questions and get instant answers
- Brainstorm ideas and get creative suggestions
- Draft emails, messages, and documents
- Summarize text and extract key points
- Translate between languages
- Get help with writing, coding, and learning
- Have natural, flowing conversations on any topic
CHOOSE YOUR MODEL
Pick from a curated selection of open-source language models optimized for mobile. Download once, use forever. Swap models anytime based on your needs — smaller models for speed, larger models for depth.
BUILT FOR PRIVACY
Atomic Chat processes everything locally on your device. Your prompts, your conversations, and your data never touch a server. There is no telemetry, no analytics tracking your conversations, and no third-party AI providers.
OPTIMIZED FOR APPLE SILICON
Atomic Chat is built to take full advantage of modern iPhone and iPad hardware, delivering fast response times and efficient battery usage through Apple's Neural Engine.
PERFECT FOR
- Privacy-conscious users who don't want their conversations in the cloud
- Travelers and commuters who need AI without internet
- Professionals handling sensitive information
- Anyone curious about running AI on their own device
Atomic Chat puts the power of modern AI in your pocket — without the compromises of cloud services. Download, pick a model, and start chatting. Your data is yours.
Useful for running and interacting with small local models in the absence of WiFi/cell-data connectivity. Interface needs work: iPhone SE2//SE3 is still supported by Apple, but the Atomic Chat interface does not properly adapt to the shorter screen lengths on these phones. Hopefully a fix for that is coming soon.
Developer Response
hey! thanks for the feedback and rating - we'll take a look at the adaptivity with the team
Gemma 4 E4B removed
Buzzard267
why was gemma 4 E4B removed in the recent update to this appedit: I’m using an iPhone 17 Proedit2: also would be nice to see quantization options for models
Developer Response
Hey Buzzard, thanks so much for the review - feedback like this really helps us out! You're totally right and this one's on us.In the last update we added a filter that matches each model's requirements against your device's specs and hides the ones that might crash - and Gemma E4B got caught up in it even though it was running just fine for you.We're already fixing it - moving to a "Recommended" list plus full access to every model, so nothing gets pulled out from under you.Quick question: which device are you on? That'll help us get the cutoffs right. Thanks again for flagging it!
upload models manually
trey2390
pls add function to upload models manually
Developer Response
Hello! Thanks for the feedbackGrabbed it, we're on it
- Push notifications when a model finishes downloading or a chat replies while you’re away from the app
- 10+ ui fixes and improvements
Version 1.9
The developer, Atomic Mail, 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 Not Linked to You
The following data may be collected but it is not linked to your identity:
Identifiers
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
