This application is used to check and practice the pitch of your singing voice. It can also be used for tuning musical instruments and composing music. Try the beautiful ZEN-themed UI design with no waste and the refined usability of version after version.


A wide variety of musical scales



Color theme

Pitch adjustment

Keyboard scales

Change keyboard labels (CDE, Do Re Mi, etc.)


Major Scale

Minor Scale

Pentatonic Scale

Pentatonic Minor Scale

Harmonic Minor Scale

Melodic Minor Scale

Whole Tone Scale

Major Blues Scale

Minor Blues Scale

Spanish Scale

Yonanuki Minor Scale

Ryukyu Scale