The idea behind the game is very good. Controls feel smooth and transitions too, except for a few times i got semi-stuck between 2 tiles.

I feel the UI could use a lot of improvement, specially the font it looks kinda pixelated or blurry sometimes, even the game title. The rest of buttons, panel, etc. look nice but could be better.
The main character could use a better animation and sprite too. Feels like you need a better designer.
At this current version is fun enough for a free game with ads, but doesn't feel buy/pay worthy to me at this moment.

Hope this helps you and doesn't sound too harsh.