Piano Matrix offers a simplified version of a piano with only whole note steps (white keys) organized as a 7x7 matrix. Each row is a different octave with the lowest (C1 to B1) in the first row and highest (C7 to B7) in the bottom row.
Keys play when tapped or by sliding touch, and the keys light up in rainbow colors, making it easy for young fingers to have fun making music.
This is a great app for a baby, toddler, kid, or grownup that likes to use iPhone or iPad as a virtual instrument. Enjoy!