Yep, Tonara is much farther advanced. The app turning the pages automatically is a fantastic helper when playing the piano, where your hands are constantly on the keys. It really works, and works well - I'm using it constantly.

Unfortunately, Tonara has a very limited store: Etude has Lady Gaga, Nora Jones, the Beatles etc. while Tonara only has classical composers. Also, Tonara doesn't allow users to add their own compositions, and they have publicly said that they will oppose against this public wish (http://getsatisfaction.com/tonara/topics/when_can_i_add_my_o...). Not a good strategy if you ask me.

This is still very early in the game.