Moekadu Tuner

What Moekadu Tuner is

Moekadu Tuner is a free Android app for tuning musical instruments. It analyzes sound with autocorrelation and FFT spectrum analysis, then uses spectrum phase information and polynomial fitting to improve pitch accuracy. A pitch history shows how detected pitch changes over time, and intonation monitoring and a custom reference pitch are also listed. The app supports equal temperament and other temperaments, including non-12-tone EDO temperaments. Its instrument database can be extended with custom instruments. Signal settings include FFT window size, window type, and overlap. The app requests microphone access to analyze and display instrument pitch; its privacy policy says it does not otherwise collect or use private data. The listed permission is RECORD_AUDIO. The project is GPLv3 licensed, and its README says it has migrated to Codeberg. The Google Play listing names Michael Mößner as developer and gives a support email, with bug reports directed to GitHub issues.

Who it suits

It suits musicians who want an Android tuner with pitch history, temperament options, and custom instrument settings. It may also fit users who want to tune against a custom reference pitch or monitor intonation.

Limits

The free plan is the Android tuner app and does not list other platforms. Using its pitch-analysis functions requires the RECORD_AUDIO permission.

Getting started

1. Open the Moekadu Tuner Google Play listing on an Android device
2. Install the free app
3. Grant the RECORD_AUDIO permission
4. Select an instrument from the built-in database or create a custom instrument
5. Set a reference pitch and temperament if needed
6. Adjust FFT window size, window type, or overlap for signal analysis

Verdict

Moekadu Tuner combines pitch analysis with configurable instrument and temperament options. Its Android-only availability and microphone requirement are important considerations.