This is a problem with plagiats. They just copy information minus carrying out any fact checking and end up passing the wrong information
I can see a case of plagiarism and text spinninghttps://www.investopedia.com/tech/how-does-bitcoin-mining-work/ from this article -
You can not mine cryptocurrencies easily with a simple apps, those apps are all scam and they wont give you what they promised!
To mine BTC you need either a GPU (graphics processing unit) or an application-specific integrated circuit (ASIC) in order to set up a mining rig. And this is not something that an app will offer to you for free!
GPUs can no longer mine BTC. You would completely be wasting time if you tried using one. They can be used to mine altcoins like ETH, Ravencoin etc