AdMob has compiled some interesting data concerning smartphone usage. One of those fun facts is that the Android population is dominantly male by a vast majority. In fact, 73 percent of Android users are male, while other smartphone platforms remain much closer to 55 percent.

It’s pretty easy to see why. The Droid, Android’s most successful phone to date, was clearly marketed at males. Remember the stealth bombers? The upper-atmosphere spaceship drops? Not exactly your feminine hype.

Among the other stats AdMob compiled was the fact that free app downloads outnumber paid almost 10 to 1. Also, a meager 21 percent of Android users purchase apps on a monthly basis, compared to 50 percent for the iPhone.

You can find the rest of the stats over at ReadWriteWeb.