@teletubo Thank you very much for your detailed feedback. It is very valuable for us.
It runs perfectly fine on my Samsung Galaxy Tab 10.
Great news. We tested it only on smartphones. Good to know that is also works on tablets ...

The gameplay is okay, it can be a good time waster.
This is our first game. We are doing our best.
However I don't like it that sometimes you have a slope with spikes right on the end of it. As far as I could tell, it is simply unavoidable... or am I just a bad player?
Good point. We are also not happy with some parts of the level. We are continuosly improving the game. We will release a new version soon.
I praise the effort to make the buttons self-descriptive (since nobody likes to read), but I think something could be made to make the buttons look like a "pressable" thing, not just an icon or decorative image. For example in the high-score page, there is the button for local highscores and the other one for the online high scores. Between them there is an icon that shows which one you're looking at. But all the three components look the same, I mean, which one is selectable, which one is just a decorative icon?
Again, a very good point. We will try to improve our UI. Thank you.
And although this is not changeable anymore, since you have already lots of downloads, I can't help but read the game title as "Rape the Frog". But maybe that's just me and my sick mind.
This is funny ...
Now just a curiosity, you always use "We" and "Us", so I assume you're a small indie studio. So what exactly is your goal with a 100% free game? Just to make yourselves a name and then go for the commercial stuff?
We are two developers from Berlin. As many indy gamedevs, we don’t really like commercial games. We build games because it makes fun, not to earn money. So do not expect any commercial stuff from us ...