My first Android game (Four In A Row)

So I spent around 10 minutes playing the game on the various difficulties, which seemed to be pretty well balanced. I could beat most games on medium and a few on hard. Liked the physics, and that the "coins" were slightly nudged out of position when another was dropped on top of it. When playing pvp I noticed there was no way of keeping score, which could be a nice feature to have, I think.

Music was good enough I guess, but I turned it of as soon as I started playing. I wouldn't mind having some sort of fx for the coins dropping though.

The background was a bit distracting at first, but you got used to it. And the overall graphics were serviceable.
Though if you want more people to download it, I'd suggest something more visually appealing for the main menu, since it's the first thing people will see after downloading and installing it. Not to mention on the store page.

One thing bothered me quite a bit however, the ad banner. It seemed to cover up half of the first row(and something on the main menu in the lower left corner, that I couldn't even make out was it was supposed to be), which I found to be quite annoying. Personally I would prefer it if you would either scale down the playable screen so that the banner doesn't overlap it, or move it to the side where it's not in the way of anything.

Anyway, it was a good four in a row game. Not much you can do with that concept really. Quite good for your first app. I've seen a lot worse.

Hope you keep developing :)