I downloaded both of their apps for my 3 year old yesterday and was initially shocked at the £30 in app purchase costs, but decided to purchase anyway as the app was excellent.
(Side note: It led me to think about compound value creation as an excellent business model.)
Anyway, I checked out the developers website this morning to learn they are a non profit and the expensive in app purchase income is used to educate people in less privileged locations.
Fantastic work guys! 👍