i think its a very good conceot of minning coin on mobile by just download the app it is the most easy way to earn some money and its a very uniqe way i think no coin or company in the world offer minning coin on your mobile. i see ETN in feature would hit around 1$ so save your coins in your wallet and sell them in feature on 1$ they have a great team promt solving problem of minner so enjoy your free coin make some money and support ETN