Once you have bought the hardware from PlayOsmo.com or from our retailers, you can download our apps from the Apple or Amazon App Store, most of them free of charge:
https://itunes.apple.com/us/developer/tangible-play/id799157444
All of the Osmo apps (except for MindRacers and Projector) are also available on Amazon.com at this link:
https://www.amazon.com/s?rh=n%3A2350149011%2Cp_4%3AOsmo&ref=bl_dp_s_web_0
Five Osmo apps include in-app purchases (although the initial download is free): Numbers Toybox, Words Explorers, Kaleidoscope, Cooking Chaos, and Words Chomp.
Five Osmo apps are paid: Kaleidoscope, Counting Town, Shape Builder, Lettertopia, and Math Buzz.