Here is an interesting, unique app to be used as a schedule throughout your child's day. It is Everyday Grooves and is currently free.
Basically, it is a set of songs that can used to help children go through the daily routine. There are songs to wake up, brush teeth, get dressed, take a bath, read a book, go to bed and more. You can set an alarm for each song to start playing at a certain time of day.
This would be a fun app for those kids who love music or to song to help then stick to the daily routine.