TuneLab Piano Tuner

TuneLab Piano Tuner is a professional tool for piano technicians that creates custom tunings by measuring the piano's inharmonicity. It supports hundreds of tuning files, stores them locally or in the cloud (Dropbox), and offers a Phase Display and Spectrum Display for precise tuning. It also includes a strobe-like phase display, historical temperaments for period music, and an over-pull mode for more accurate pitch raises.

Users can automatically switch notes, view two displays simultaneously, and tune across the full 88-key range (A0 to C8). It supports flexible tuning stretch settings, easy loading of saved tunings, and seamless cloud syncing, all as part of the TuneLab ecosystem for mobile, tablet, and laptop use since 2001.