Learn the Treble and Bass Clef with this Sight Reading App. It makes a game out of learning sheet music. It was written for our Children but would work just as well for an Adult.
There are many game selections designed to easily progress the player through learning the entire Clef rapidly and painlessly.
No prior knowledge is needed to play the app. Our boy who is about to turn 5 is also playing it and he was starting from scratch.
We developed this for our 6 year old daughter who was taking her Piano Prep Exam (She is now Grade 7). It helped her quickly read music without resorting to the usual mnemonics (which was preventing her speeding up her note recognition) FACE and Every Good Boy Deserves Favour/Fruit for the Treble and All Cows Eat Grass and Green Birds Don't Fly Away.
Updated to work on iPad as well as iPhone.