I really enjoyed this!
The controls give just the right mix of ‘being in control’ and ‘awkward’ to make this work as a surprisingly fun physics experience. About the only thing missing is a timer (and more levels but I didn’t expect that in the first place).
The only other quirk I want to remark on is that the magnet can flip around … I’m not sure if that makes it more or less fun in the end though. (It really feels like one of those things discovered accidentally and then just left in because it doesn’t hurt the gameplay and makes it a little more unique.)