It's a very fun idle game. I could easily see myself having it open while I do other stuff on the computer and check back in on my turtle every once in awhile. It looks like you've got this comment a bit, but I think the cost to start needs to be decreased a bit. You have to spend a good chunk of time just walking over plots of land and pressing E until you get enough rainbows.
The art and music are great and convey chill turtle and fairy vibes! Nice job!