A very pretty endless runner, lovely animations and sprites. Adorable artstyle. Big fan of how it looks, so well done on that.
However, this game is extremely unforgiving, requiring very precise timing to be able to jump over the hurdles and with the character moving up and down very quickly. Remember that the audience for a hyper-casual game aren't going to have the best timings and quick fingers, so if a game is very hard at the beginning, they are unlikely to remain engaged for long. For 2D endless runners like Canabalt, the feel of jumping and being able to control the height of your jump is a key factor that dictates how good the game feels to play. However, I don't expect this to be as polished as Canabalt, but just adjusting the height and speed of the jump would go a long way.
That aside, the visuals of this game are incredible. With some menus, music, and adjustments to the jumping mechanics; not only could I see this game being good enough to put on a mobile marketplace, but it is also something I would actually be willing to pay for.