Sounds like a regurgitation of Bitclub but with a phone added in. Hey, scammers gotta change it up every now and then.

In my opinion, anything that promises a set amount of return is a ponzi - there is no way to guarantee a rate when you cannot control the price, network difficulty, or block find for your specific coin.

the only way to guarantee a set rate would be to take in millions from investors and pay it back out in increments - always ensuring you bring in more than you pay out - of course.