Well, Let’s be clear, there’s NO APPS that let you mine bitcoins.

Actually, it is impossible to mine bitcoins with apps or with a computer. To mine Bitcoin you need the power of an ASIC, even multiple ASIC. These ASIC are machines made for only one job: Mining bitcoins. More ASIC you have, more Bitcoin you mine. You need a lot of calculation power, that’s why the “miners” own big factories composed of a lot of machines with the job to mine.