Hear the music of your touch with Trinkle HD ! Just tap, stroke and doodle away to a tune :) Plays as you touch the screen and the part of the screen lights up. Featured - 8 best apps to keep kids entertained. http://www.makeuseof.com/tag/8-awesome-android-apps-kids-entertained/ Below are couple of comments received for the non-HD version for android phones: by Lynn (October 20, 2010) Great, fun, colourfu! Tunes melodies as you touch the screen along. Nice :) by Vikas (November 7, 2010) Absolutely awesome. My 18 month old loves it. My wife too likes playing with it.