Enjoyment: I'm not very good at this kind of game, but I did enjoy it.
Concept: It's a very simple concept, but well executed. I like that you give the power as a number, not just a progress bar. It lets me try to memorise the number for each jump.
Presentation: Love the art style! Very stylish. The soothing music nicely counterbalances the rage-inducing difficulty.
Use of the Limitation: I think an endless game is a good approach, and this is the first I've seen based on precision rather than reaction time.
Very nice game, hope you get some cookies soon.