There's no reward for rubbing it faster, sadly. Not like real life. If only there was a leaderboard for infinite mode I'd do nothing but rub it constantly for days.
I rubbed it out, wore down my ipad mini screen. Needs some sort of protectant. Keep a lot of ice handy. You'll wear yourself out if you just keep going at it blindly. Pacing is key. Still better than Star Command.
I think we're all missing the point here. Maybe this game in its entirety is *sunglasses* An Easter Egg.