Didn't play much of it but as far as I can tell from what I played and saw from the GIFs I can say that it is a classic platform game. The challenges are not bad but I think people are looking for something new and there is not much of that in this game. I find it a bit dry; what I mean is that there is no sound (maybe it is in the paid version) which makes it kinda boring. The best thing I like about the game is the background art and its colors. I suggest you to make some changes and update the game, trying to add something new and innovative (which is not easy).
As a developer I appreciate more critical comments rather than simple positive comments like "That's cool". So I hope you don't get what I said as negative or get discouraged. Keep up with it!