Alright! So a few things, I really like the concept of this, in fact, i'd love to see multiple levels,with various obstacles and some cool tricks you can do using the pipes. But I'd also really love something you can do with the coins, like a shop where you can buy little hats for your frog or different frogs. (that'd be pretty good incentive to get more coins i think)
It could also be fun as a multiplayer game, frogging around with friends. I think this has a lot of cool potential and I was sad that it ended.