I pad apps

Could you please send me a list of the favorite apps that you've added to your I pad?  Many preschools are getting I pads and are wondering if I have suggestions on "quality apps."  So I'd like to develop a list that can be shared.  Please send me the title and the age range, along with a brief category such as "early math."   You can also share apps that you use as an adult to keep you organized, etc.  Once I get the list organized I will share it with you!  Thanks