PIANO DASH ^[iOS]
Classical pianists, meet infinite runner.
Learn piano notation, or exhibit your sight-reading abilities.
Play as one among 6 pianists as you determine notes and leap over them.

BEETHOVEN • LISZT • RACHMANINOFF • SCHUMANN • JOPLIN • MOZART

3 Modes. All modes get progressively quicker as you play.

• Easy — treble clef solely, keys are labelled (select CDE…, or DoReMi…) and present notice is displayed
• Medium — provides accidentals (sharps and flats), treble and bass clef, development is a bit quicker
• Hard — provides ledger strains for notes exterior the common stave, quicker nonetheless

I launched it a few months in the past, it peaked at #3 in Music (this is a screenshot at #4). Only 99¢ (or equal in your nation).