I've seen your iOS app, and quite liked it. I however, being not a possessor of an iOS device, am a regular Skritter webpage user.
In my opinion, Skritter could revamp its webpage "study" page to better match its neat, game-like iOS app. To be honest, the blue-white layout of Skritter is already boring me, and it's only my eighth day here. Being so much impressed by the game-like (and un-study-like yet memorable) experience of the Skritter iOS app, I feel pity that Skritter's webpage app does not quite match its sibling.
I know that the team is small and the iOS app was a big task, but can you now please give the webpage Skritter a touch? :D