Piano Chord Memorization is a free iPhone app developed by Jumpei Adachi in the Multimedia category, specifically under Music & Radio. The main purpose of this application is to aid users in memorizing piano chords effectively. Users are presented with code names of chords and are required to select the corresponding keys on a virtual piano interface.

The app serves as a practical tool for piano enthusiasts looking to enhance their chord memorization skills. With a user-friendly interface and a focus on interactive learning, Piano Chord Memorization offers an engaging way for users to practice and improve their piano chord knowledge.