Here are some popular apps here at MPB. Most apps that we use cost $2.99 or even FREE! Some of the Special Needs apps (such as Proloquo2Go costs $189.00) can be expensive but most are under $2.99.
Pocket Phonice AB Math iWriteWords iWordQ Popplet
Spell Blocks Bugs and Buttons Phonics Genius iReadWrite Proloquo2Go