Songlio - Free musical guessing game: race friends to name that tune
Auxy Music Studio - Auxy brings real music creation to iPhone in a simple and inspiring format.
Rock On! - A song pop adventure - music trivia awesomeness
ReSlice - Slice your audio with an advanced, rhythmic arpeggiator and FX.
SongTrivia2.io - Songtrivia2.io is a browser and mobile blind test game that allows you to play in real time with your friends or against strangers. Several musical themes, difficulty and game modes are available to create lots of different musical quizzes.
zMors Modular - Full featured modular synthesizer for iOS