Tuner

What is Tuner?

Tuner is a native desktop tuner for macOS that helps musicians measure pitch and tune instruments with microphone input. It is designed for instrument tuning work, with a feature set that is especially detailed for accordion tuning but still useful for other musical instruments. The app presents several visual views of incoming sound, including waveform, spectrum, note and frequency readouts, and tuning indicators that help users judge how far a note is from target pitch. It also supports options such as alternate temperaments, reference frequency adjustment, transposition, and filters that can make tuning specific notes or reeds easier. On Mac, it fits practical studio, workshop, rehearsal, and repair workflows where a larger on-screen display is helpful. Tuner is published by Bill Farmer.

Key features

• Measure pitch from microphone input
• Show waveform and spectrum views while tuning
• Display note name, cents error, and frequency values
• Use strobe or staff-style tuning displays
• Adjust reference frequency and transposition settings
• Work with multiple temperaments for different tuning systems
• Apply filters to focus on useful tuning information

Safety overview

Status: Safe

Tuner is a legitimate music utility. It normally needs microphone access so it can listen to an instrument and calculate pitch, which is expected for this type of app. If you no longer use it, removing it should mainly affect your ability to tune instruments with this software and may delete saved settings if you also remove its support files.

Recommendation: Keep Tuner if you use your Mac for instrument tuning, repair, or practice and want a dedicated desktop tuner with detailed visual feedback. If you do not use it, you can remove it like other user-installed apps.

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