Tuner (Bill Farmer)

Bill Farmer’s Tuner is an open-source Android tuning application. It is useful for checking instrumental pitch with a mobile device rather than opening a recording workstation. Microphone input and environmental sound affect tracking, especially with weak fundamentals or noisy surroundings. Use the official project distribution and compare with a known reference when setting up an instrument for recording.

A useful display begins with a clear question and appropriate measurement settings. Confirm important observations through listening or a second check, and document calibration where absolute measurements matter.

Compatibility and classification