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AI Chat App · 2026 · 29 visuals

Atom

Atom is a fully local AI chat application for Android, inspired by Character.AI but built to run entirely on-device with your own API keys. It supports 8 AI providers — Groq, Cerebras, Mistral, OpenAI, OpenRouter, Anthropic, Gemini, and Opencode Zen — giving users the freedom to choose their preferred models. Built with Expo and React Native, the app features a sleek UI powered by gluestack-ui and TailwindCSS, with state management via Zustand. Atom delivers a seamless, responsive chatting experience with real-time streaming, chat history, and a modern dark-themed interface designed for power users who want full control over their AI interactions.

Live DemoExpoReact NativeGroqCerebras
Betav1.0

This release is a public beta. Expect occasional bugs, rough edges, and unfinished features. Feedback and issue reports are welcome as the project matures toward a stable release.

Overview

Atom is a fully local AI chat application for Android, inspired by Character.AI but built to run entirely on-device with your own API keys. It supports 8 AI providers — Groq, Cerebras, Mistral, OpenAI, OpenRouter, Anthropic, Gemini, and Opencode Zen — giving users the freedom to choose their preferred models. Built with Expo and React Native, the app features a sleek UI powered by gluestack-ui and TailwindCSS, with state management via Zustand. Atom delivers a seamless, responsive chatting experience with real-time streaming, chat history, and a modern dark-themed interface designed for power users who want full control over their AI interactions.

Tech Stack

Expo
React Native
Groq
Cerebras
Mistral
OpenAI
OpenRouter
Anthropic
Gemini
Opencode Zen
gluestack-ui
Zustand
TailwindCSS

User Reviews

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Abdalla Ahmed | Full Stack Developer