PianoMeter – Piano Tuner

Transform your Android device into a professional piano tuning instrument with PianoMeter – Piano Tuner, the only app that goes beyond basic chromatic tuning to create custom tuning curves tailored to your piano's unique acoustic characteristics.

Unlike standard tuning apps that rely on preset equal temperament, PianoMeter actively measures each note's tonal properties and automatically calculates the ideal stretch or offset from equal temperament. This mimics the sophisticated approach professional piano tuners use when balancing critical intervals like fifths, fourths, octaves, and twelfths. The result is a personalized tuning that maximizes harmonic richness and intonation accuracy across your entire instrument.

The free evaluation version lets you explore the app's core capabilities on the mid-range piano (C3 to C5). You'll access automatic note detection, real-time measurement of how your piano compares to the ideal tuning curve, and a live frequency spectrum view to assess overall tuning condition. This makes it easy to check whether your piano needs professional attention before committing to an upgrade.

Upgrade to the Plus version to unlock full-piano tuning functionality. Tune to alternative frequency standards beyond A=440, explore historical or custom temperaments, and calibrate your device to an external frequency source for maximum accuracy. This level suits piano enthusiasts and semi-professional tuners who want complete control over temperament choices.

The Professional version is designed for working piano technicians. Save and load tuning files so you never need to re-measure a piano between service appointments—a massive time-saver for busy schedules. Access pitch raise mode to calculate optimal overpull for initial rough tuning of severely flat instruments. Create entirely custom tuning styles by adjusting interval weighting and stretch curves to match your personal voicing philosophy. Professional subscribers also receive all future feature updates and enhancements.

PianoMeter requires microphone access to listen to your piano's sound and file read/write permissions to store and manage tuning data. Whether you're maintaining your own instrument, managing a collection, or running a professional tuning business, PianoMeter – Piano Tuner delivers the precision and flexibility serious pianists and technicians demand. Start free today and upgrade whenever you're ready to expand your tuning range and capabilities.