Otamatone is a free Android app that brings the unique sound of the Otamatone musical instrument from Japan to your smartphone. The app features two modes of playing, touch bar, and tilt device, allowing users to produce a range of sounds across three octaves.

The app also includes an interactive mouth and mouth animation, adding to the fun and unique experience. Users can also loop record their creations. The latest versionintroduces a Halloween skin, and the touch bar control has been adjusted for a smoother experience.

Overall, Otamatone is a fun and challenging app for those who enjoy exploring unique musical instruments. The app is easy to navigate, and the touch bar and tilt device modes provide a range of sound options. However, some may find the sound of the Otamatone to be annoying.