A native Android client for the LLM buffet

What it does ChatAir is a native Android chat client written in Java that connects directly to OpenAI, Google Gemini, Anthropic Claude, and DeepSeek APIs. It also accepts custom server addresses, so you can point it at OpenRouter, One-api, or a local Ollama instance. The app renders Markdown, highlights code blocks, and offers an image recognition feature.

The interesting bit The pitch is deliberately low-tech: it is built as a native Android app, not a cross-platform web wrapper, which the author claims makes it “smoother and faster” than browser-based alternatives. In an ecosystem crowded with React Native and Electron wrappers, betting on old-school Java for performance feels either stubborn or refreshingly honest.

Key highlights

• Supports four major LLM backends out of the box, plus arbitrary custom server URLs
• Image recognition for extracting information from photos
• Deep customization: system prompts, temperature, context history length, and reply token limits
• Dark mode and custom themes
• 15-language localization

Caveats

• Performance claims (“smoother and faster”) are stated but not measured or substantiated in the README
• Image recognition support is mentioned without clarifying whether it relies on cloud vision APIs or local processing

Verdict A solid choice if you want a single native Android inbox for multiple LLM APIs and prefer Java stability over web-wrapper convenience. Look elsewhere if you need iOS support or deep automation beyond chat.