EasyTune - Version 1.2.3 EasyTune is a robust chromatic instrument tuner intended primarily for piano tuning. Easy to use, and highly accurate. EasyTune analyses the inharmonicity of the piano while you are tuning, to accomplish fast automated stretch tuning. EasyTune can also be used to tune most other instruments. You push a single button to turn off stretch tuning, and you are ready to go.