Ah, I see. Unfortunately most mobile mining apps are scams as well. Mining in general is done either with ASICs (Application Specific Integrated Circuit, costs thousands of dollars and requires a lot of electricity) or GPUs (Graphics Processing Unit, the video card in your computer). Mining Bitcoin specifically is really only possible with ASICs, while mining most other coins require at least one recent GPU (preferably more than one if you actually want to make a profit). Phones don't have nearly as much power as ASICs or GPUs, so it's highly unlikely you'll ever make any money mining on your phone. There's a small chance you could earn a payout, but it will likely be less than the amount you paid to charge your phone.