Cocoa motivates and accelerates learning by combining gamification with social network integration, skeuomorphic design, flexible study exercises, external content recommendations, games, and more. Still in development, the app will be available for usage by invite only in the near future, after which it will be made publicly available for free.

I think this is awesome! And the domain, http://cocoa.io, is AMAZING. Very catchy.

Adding a "Show HN" tag and opening the site to let us try (instead of requesting invites) would help.