Awesome, very unique mechanic. Though sometimes it wasn't very clear what to do next and unintentionally bouncing past a checkpoint was quite annoying . The only thing that really bugged me out was the fact that frog gets stunned for a while even after the smallest of jumps ;)
All in all - fantastic concept, pleasing graphics, fast gameplay (with fast restarts).
Also, that careful placement of some platforms (so that frog could smoothly bounce from one to another) must've taken some time to arrange, but it was definitely worth it!