Purdue University research shows that up to 75% of free apps drain smartphone batteries.  Many of your favorite apps are the very reason your smartphone battery is not lasting as long as it's designed to last.

Popular apps like 'Angry Birds', 'Chess Free' and 'New York Times', just to name a few, use only 10% to 30% of the energy they consume to actually run the app.  The rest of the energy is used for pop up ads and tracking and uploading user data.  That means your smartphone battery is being drained mainly because big brother is watching your every move, so to speak.

As Debbie Ray and I stated on the air this morning, running just one energy-hungry, free app, can drain a smartphone battery in about 90 minutes!

[Via:  Purdue University]