PCMark for Android measures the performance and battery life of the whole device using tests based on common, everyday productivity tasks, such as browsing the web, watching videos, working with documents, and editing photos.
Unlike other Android benchmarks that simply show a progress bar while working through various abstract algorithms, with PCMark for Android you see how your device is being tested.
The size of the PCMark for Android Work benchmark is a result of the 1080p video content required for the Video Playback test and the set of 4 MP images used in the Photo Editing test.
The PCMark for Android app is 50 MB. To install all tests requires 550 MB of free storage space. You won't lose your scores if you later decide to uninstall some tests to free up storage space.