The researchers at Carnegie Mellon University unveiled amazing data about apps and ranked Android apps considering two features at priority. The apps were ranked with the alphabetic numbers A, B, C and D. the first standard that kept in the mind while ranking the apps was the tracking method.According to this standard those apps got higher ranks that track users better and that tracking is also according to user expectations. The apps like YouTube, Google Maps, Gmail, Google Play and Hangouts ranked as (A) category at Carnegie Mellon University research.
The apps like Shazam, Kakao Talk Temple Run 2 Tango Messenger and Hill Climb Racing is graded as second category apps. The researchers also revealed that Shazam is using GPS satellites of government and Hill Climb Racing need your phone number for a driving game. Go Launch Ex, Angry Birds, Super Bright LED Flashlight, Angry Bird Seasons and Line was ranked at category C as they has numbers of versions step by step and engaged large number of users with their every new launch. My Talking Tom, Talking Tom Cat, Fruit Ninja, Talking Tom Cat 2 and Drag Racing is graded as D at Carnegie Mellon University.