This app was removed from the App Store.
Beginner Ear Trainer: Piano iPad Edition
iOS iPad Music
The Beginner Ear Trainer Piano app is a designed to allow anyone, whether they play the piano or not, the ability to distinguish notes based off of pitch and tone. It is super easy to use and you do not need ANY musical experience to start enriching your musical art. It plays a piano note, you press which key you think is the correct response. It will even label the keys for you.
It uses a piano for the sounds as this is one of the most widely accepted instruments.