Thanks PointOfLife, that is indeed annoying considering that I'm a completionist and have already completed about 80% of the game so my achievements won't transfer to my 'real' gamecenter account... It's still a great game and I hope they have tons of new levels coming.
I've been playing Mr. Frog; it's pretty fun but there is already one glaring bug that needs to be fixed. It's a score based arcade game and you're given objectives to meet each time you play to obtain stars for leveling up. I got 3 stars and then it wouldn't give me any more stars after that even though I've completed the objectives. I tried resetting it and still the same problem.