Essential Tools is package that contains a group of tools for developers, especially for mobile platforms with speed test and polygons counter.
SPEED TEST:
Click play button on editor to start the speed test and it displays the game speed and the used power
POLY COUNT:
Poly Count can test the total project, camera view or the real time scene view polygons. During the play mode you can exclude / include objects to see the total weight changes. With "Only visible Object" you can see the total poly of only objects visible from camera.
With "Show Childrens" you can see all children objects.
OBJECT INFO:
Select a game object from Hierarchy for see all object info.