I absolutely adore the atmosphere of this game, the lovely background, the calming music, the peaceful transition from day to night, the growing stacks of wheat in the neighbouring field, all incredibly lovely.
The gameplay is obviously simple but does what it needs to, my only real feedback is how the hats have an inconsistent pixel size and don't always sit on the apple as well as I would like.
And if you want to try and improve the already great background, adding some subtle movement to the clouds and water would be a nice touch I think.
Great work!