Here are the additional reasons why you should buy this App: 1. Intuitive and easy-to-understand interface; 2. Full keyboard range of a grand piano (7+ octaves, 88 keys) with authentic sounds; 3. Built-in note sign ages: standard (A, B, C) as well as solfeggio (do, re, mi); 4. Treble clef and bass clef modes including flats and sharps; 5. Sound for every note being played; 6. Retina display supported. We are certain you will find PianoNotesFinder very useful!