On top of my head: Any.Do Life360 AllTheCooks They subsequently released an iOS app & they are doing really well on the App Store. I know of a bunch of Twitt

On top of my head: Any.Do Life360 AllTheCooks They subsequently released an iOS app & they are doing really well on the App Store. I know of a bunch of Twitter clients (i.e. Falcon, Plume) built by indie devs that earned a tidy sum of money. There are also a number of apps that are only possible on Android (widgets, homescreens, etc) and have generated a good sum of money for the creators.