You don't want to pay 99 cents for apps. We get it. that's a ton of money. But downloading the free version might be having a really negative side effect...they're killing your battery.

A new study found that free versions of apps can suck up 75% more battery than paid apps because they're using a lot of processing power and accessing a lot of data to serve up ads. Paid versions don't usually show those ads.

(PC Magazine)