DoReMemory -- $0.99
Excellent learning tool. Default is letter names but can be changed to fixed DO.
Rhythm Cat Lite -- FREE
There is an in-app upgrade to PRO if you like it.
Rhythm in Reach -- $3.99
Very good rhythm learning tool the starts with a simple lesson and goes up to advanced. Multiple users and it helps you improve and keeps score.
Note Squish -- $0.99
In seetings choose DO RE MI, clef, note range and speed.
We wish you a merry christmas
dance of the sugar plum fairy
Saint-Saens Carnval of Animals -- $3.99
Worth every penny. Music to listen, look at watch, play with & sweet animation.