A free program for Android, by COJAM_Developer.

COJAM is an innovative blockchain-based platform that should permit two users – one that is creating the content, another one that is solving the content – to exchange with the other and therefore record a smart contract in the blockchain network, which should reward them based on the prediction result.

Cojam Prediction Platform permits users to participate in prediction quests. It boasts of a simple and intuitive interface that aims to make things less overwhelming for the new user. As such, all functions can be found in a single page: your wallet, the voting page, rewards, transactions, and so much more. 

You can opt for notifications on new quests, the latest updates and announcements, and so much more.