Piano Modoki is a free iPhone application developed by Ryouta Kira. It falls under the multimedia category, specifically music and radio. This simple ad-free app provides users with a piano-like musical keyboard that is easy to play, offers good response, and has a small application size. With Piano Modoki, users can enjoy playing the instrument without any distractions.

One of the key features of Piano Modoki is the ability to scale the key size, allowing users to customize the keyboard to their preference. Additionally, the keyboard can be arranged in double rows, providing a wider range of keys to play. Users also have the option to flip the second keyboard, further enhancing the flexibility of the app.

Piano Modoki includes a metronome, which is a useful tool for practicing and maintaining a steady tempo. Users can also change the sound pitch and transpose keys to suit their needs. The app supports just intonation, providing a unique sound experience.

The app utilizes FM synthesis instead of sampled real sounds, but still manages to create a piano-like sound. It offers two default sounds: FM Piano-like and FM E.Piano. Furthermore, Piano Modoki can load KQ Dixie's current patch, allowing users to expand their sound options.

Overall, Piano Modoki is a user-friendly app that provides a simple and enjoyable piano-like musical keyboard experience on the iPhone. Whether you're a beginner or an experienced musician, this app offers a range of features to enhance your musical journey.