Good concept and game
Just spent a close to an hour going through the game, upgrading, etc. It is an excellent game and I did not experience any problems. I will say that there were not many pokemon to catch within these first few levels, but I suspect that will change with upcoming updates.
What Im curious about is a the idea of when a pokemon levels up, the area which they can attack might also expand just a bit? Otherwise, it seemed to me that leveling had no immediate effect unless it resulted in learning a move. Perhaps include a screen explaining the effects of leveling up?
Looking forward to more levels and updates.