Don is a app that provides news, offers, rewards. In this app have some tasks, If you completed these tasks then rewarded. But many times this app does not provides rewords. Mostly tasks related downloading apps, these app are harmful for mobile phone or slow down performance of mobile. Layout and design is good. but user interface is not too good. Don have no useful features. Don App uses lot of resources of smartphone. If you are using this app then you are waste his time.