ScaleMate - Visualize Harmony

ScaleMate - Visualize Harmony is a music theory app that helps you explore scales, chords, and chord progressions with clear visuals and real-time sound. See notes and intervals on a keyboard and staff, hear every degree, and understand which chords fit each key. Ideal for music students, producers, and educators who want a fast, intuitive practice and reference tool. Key features include an interactive scale and chord explorer with instant playback, a progression builder with smart diatonic suggestions and quick transpose, and ear training drills to strengthen recognition. With streamlined design and flexible notation options, it works as a reliable music theory app, scale visualizer, chord progression helper, and ear training practice tool.