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Atomic Chat: Private Local AI

Atomic Chat: Private Local AI

Private & Offline AI Assistant

6 ratings
3 reviews
🔧 Utilities
📊 Productivity
Free

Details

  • Released
  • Updated
  • April 29, 2026
  • July 15, 2026

Developer

Atomic Mail
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About

This AI assistant runs entirely on your device, offering complete privacy and offline functionality. It allows you to ask questions, brainstorm ideas, draft content, and more without needing an internet connection or an account.

✓100% on-device AI processing
✓Complete privacy, no cloud servers
✓Offline functionality
✓No account or sign-up required
✓Choose from curated language models
✓Optimized for Apple Silicon
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What's New in Atomic Chat

1.6

July 15, 2026

Added Bonsai 27B: the first 27B-class model to run on a phone Bonsai 27B is the new multimodal flagship of the Bonsai family. Based on Qwen3.6 27B, it brings a new capability tier to local AI: multi-step reasoning, structured tool use, long-context workflows, and coherent agentic loops.

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User reviews

Most RecentHighest RatedLowest Rated

Great App, and a Definite Recommendation for Local AI Users.

A suggestion from me would be that you add a TTS feature like Kokoro TTS from Hexgrad. Thank in advance.
Digital Ninja GamingDigital Ninja Gaming

Response from developer

Hi! Really glad you're enjoying the app and thanks for the feedback! We've added the TTS feature to our backlog - will discuss it with the team

upload models manually

pls add function to upload models manually
trey2390trey2390

Response from developer

Hello! Thanks for the feedback Grabbed it, we're on it

Gemma 4 E4B removed

why was gemma 4 E4B removed in the recent update to this app

edit: I’m using an iPhone 17 Pro
edit2: also would be nice to see quantization options for models
Buzzard267Buzzard267

Response from developer

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!

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FAQ

What is Atomic Chat?

Atomic Chat is a private AI assistant that runs entirely on your iPhone or iPad. It offers 100% on-device AI processing, meaning your conversations never leave your device and it works offline.

Does Atomic Chat require an internet connection?

No, Atomic Chat works offline after the initial model download. This makes it ideal for travelers or users in areas with limited internet access.

Is Atomic Chat free to use?

Yes, Atomic Chat is free to use with no subscriptions or hidden fees. The app is available for free and does not have in-app purchases.

What kind of AI models does Atomic Chat use?

Atomic Chat uses a curated selection of open-source language models optimized for mobile. You can choose and swap models based on your needs for speed or depth.

Is my data safe with Atomic Chat?

Atomic Chat is built for privacy. All processing happens locally on your device, so your prompts, conversations, and data never touch a server. There is no telemetry or analytics tracking.

What devices is Atomic Chat compatible with?

Atomic Chat is optimized for modern iPhone and iPad hardware. It is supported on iPhone and iPod devices.

How often is Atomic Chat updated?

The latest version of Atomic Chat is 1.5, which was last updated on June 23, 2026. This indicates regular updates to improve functionality and performance.

What age rating does Atomic Chat have?

Atomic Chat has an age rating of 9+, making it suitable for younger users and adults alike. This suggests content is generally appropriate for this age group.