A solid wee game.
A few bugs - Sometimes collisions seemed to stop you dead from full speed, and sometimes they seemed to not slow you down at all, with no particular rhyme or reason to it. The first spin I did I had no momentum, so just sat there for ages and didn't seemed to lose much spin speed - I sat there for about 2 minutes before refreshing. And at one point I appeared to have the required resources for an upgrade but couldn't buy the upgrade.
None of these were a hard block from enjoyment, but did seem a bit odd, so thought you should know. Good job <3