This is the site for it,
https://minepi.com/ It basically is a new alt coin that mines on your phone its getting big in china for some reason, You need a beta invite code to get access to it which is just my username if you wanna check it out, Its on IOS, Seems cool.
Yes i use it. The idea of this app (project) is actually to make everyday transactons as simple and useful as they can be (paying with cryptocurrency simply by mobile phone...and the Pi Network app will be used as a wallet)
I checked the both of your profile buy it seems you two are only came here just to promote pi network?
It seems a multi account