Liked the game! It felt good to move smoothly through the levels without slowing down, improving and getting faster was very rewarding. I had an easy time learning the controls without being told them just from the design of the first level! Great work!
Aside from that, I found the geometry of some of the levels made movement slightly frustrating, and if the double jump cooldown (detection for when you touch the floor again) was more forgiving, I think some of those more complex levels would feel much better to play.