Pretty fun, simple concept, no complaints on it.
The jumping feels a little difficult to do (gauging the jump strength is a little difficult). It might be a child friendly game, but landing on each platform isn't the easiest of tasks. I very often found myself missing it by just a little bit. Maybe if I played it a bit more I'd do better, dunno. Correcting myself in air is just as hard to do. Because of this, I couldn't even complete the first level. But I only tried it a few times.
Also, sometimes the snails would not collect for me, and the dragonflies would fly higher than the frog can reach.
The artwork is cute and beautiful for a game extremely targeted at children. And the animations are simple and perfect for it. The physics as well, are present but not necessarily doing much of anything (I almost made a log vertical, but the froggie was perfectly find and stuck to it). I would definitely say this game would be perfect to play on an iPhone or Android.