Many of us don't care for ads because they tend to get in the way, but a new study suggests you should be worried about your battery life more than anything. A research team from Purdue University and Microsoft shows that apps with ads are probably responsible for about 70% of those apps' battery usage. The increased usage seems to be due to an ad's necessity to gather user metrics, geographical location and downloading the ad itself. They found this behavior in Angry Birds free edition, FreeChess and the New York Times app.
But these issues aren't isolated to apps with ads, the team says.
Android Phone, Study Says Ad-Enabled Android Apps Drastically Affect Battery Life