Just want to also confirm there is NO iap here, in any way, shape or form. Refreshing, very refreshing!
I thought I remember seeing an early video where the Dev started playing on their iPad and then switched over to their iPhone. If so, I'd say it's supported, but I could be mistaken.
Guys, the game is already being released as we speak so all this chat belongs to the main games section from now on: http://forums.toucharcade.com/showthread.php?t=209274