Quick answer
An open-source guitar tuner that just works
F-Droid repository metadata
A fast, offline-first, open-source guitar tuner for Android. Most tuner apps today have evolved into subscription platforms, requiring internet connectivity, accounts, advertisements, or cloud services for functionality that should work entirely on-device.
Features
- Useful UI
- Real-time microphone input
- Pitch detection
- Note detection
- Cents offset visualization
- Guitar tuning mode (E2 A D G B E4)
- Offline operation
Screenshots
How to install
- Download the APK from the button at the top of this page.
- Allow “Install unknown apps” for your browser or file manager only, not for every app.
- Open the downloaded file and confirm the installation.
- If installation fails with “App not installed,” remove an earlier build of the same app first. A signature conflict is the usual cause.
Data safety
- Every file is checked against its published SHA-256 before it is listed.
- Files are scanned for malware on every update.
- The permissions each app requests are listed on its own page.
- Read the full safety policy for how we test, flag, and delist files.
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