I usually write reviews in AppStore for apps that I truly love or apps that are really annoying. I guess most of the users do the same thing.
That being said, I am proud to paste below some of the customer reviews that were written for the apps.
Because I can't reply in the Apple's App Store, I will do it here: Thank you all for your support and for your high desire to learn music and how to play the piano!
Thumbs up ★★★★★
by Alysonjon - Version 1.1 - May 30, 2012
I like this app, its helping me learn the basics and right now thats what I need. Now I could tell you where and what each key is(so far only the white keys because I'm only on the 2nd lesson), before I got this app I wasn't so confident. Thank you to whoever made this app :)