A free program for Android, by Phoneum.

Cloud Earning is the only mobile-only cryptocurrency that allows you to earn FONE. We created a platform that makes it easy for anyone, regardless of their technical skills, to participate in the new cryptocurrency economy. You can earn FONE in just a few minutes and without any prior knowledge, with a simple and easy-to-use interface. All you need to do is download the app and press the button “Start Earning”. The server will handle everything in the cloud, therefore, you don’t need to keep the device open or in the background to earn FONE. Once you’re connected, the app doesn’t require you to keep it open or in the background to earn FONE.