Always On: the Ambient Clock is Used to keep track of their time? With this app it will be much easier, the clock will always be on top of any app and lock screens. This simple but very handy feature which will help all who often looks at his watch, as well as for people with poor eyesight. After a little climb in the settings, you can change not only the design of the clock itself, but also by their size. Speaking of design, there are many different kinds of clocks, they all differ in color and design.