The art style is super cute, and the animation is nice and bouncy to complement it. Using the less than/more than theme to change objects' sizes makes for a very interesting puzzle mechanic, which you've explored to its fullest extent.
I had a bit of trouble trying to keep the unique momentum curve of the platforming, and the specifics of the object manipulation in my head at the same time, but the early levels are short and succinct enough to give you time to adjust before the difficulty ramps up.