TL;DR
- A lightweight Mac app that shows Android logcat in real-time GUI
- Press 🐣 on any log line → Gemini AI explains the cause and fix in seconds
- Completely free & open source
Why I built this
Android Studio is too heavy just to check logcat.
I wanted a lightweight Mac-native tool — and decided to add AI diagnosis while I was at it.
That's how HiyokoLogcat was born.
What it does
- Real-time logcat streaming via USB
- Color-coded by log level (ERROR / WARN / INFO)
- Keyword search & level filtering
- Press 🐣 on any line → Gemini AI explains the root cause in your language
The AI diagnosis is surprisingly good
Here's an example of what Gemini returns:
Root Cause: This log is part of normal Android system lifecycle management...
Fix: Use a Foreground Service to prevent the system from killing your process...
Powered by Gemini 3 Flash Preview — works with a free API key.
How to use
1. Download
Grab the latest .dmg from Releases
2. Set up Gemini API Key
Get a free key from Google AI Studio → paste it in ⚙️ Settings
3. Connect your Android via USB and hit Start!
Tech Stack
- Rust + Tauri v2 — Native Mac app
- React + TypeScript — UI
- Google Gemini API — AI diagnosis engine
- react-virtuoso — Handles tens of thousands of log lines smoothly
Wrapping up
HiyokoLogcat is free and open source. Feedback, bug reports, and stars are all welcome 🐣
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