PianoMeter (formerly Easy Piano Tuner) is a piano tuning application that will transform your Android device into a professional*quality electronic tuning aid. The “free” version of this app is primarily for evaluation, and it only allows you to give notes to the piano between C3 and C5. To tune all the piano, you have to buy an upgrade via an integrated purchase.
Supported Android
{4.0 and UP}
Supported Android Version:-
Jelly Bean(4.1–4.3.1)- KitKat (4.4–4.4.4)- Lollipop (5.0–5.0.2) – Marshmallow (6.0 – 6.0.1) – Nougat (7.0 – 7.1.1) – Oreo (8.0-8.1) – Pie (9.0)