Well.. It is a fun game, seems to be a cute simple puzzle game that is well thought out. That being said, however, it is not even remotely fun enough to set through adverts after every level. I played for a bit, got sick of the ads and walked away. Probably won't bother playing it again.
Overall it could have been a game that I would have scored much higher, but the constant ads ripped any life it could have had from it. As a result I think giving this 1.5/5 stars is generous.