CryptoMining Apps

If you are looking for Cloud Based Crypto Mining Apps like Pi Network, so you find it difficult to look for legit apps, so you should always look for few specific elements such as; face behind app (founders), their research paper (White Paper), their future plans and what permissions these apps looking for when you install them in your phone. So i guess there are more then 12-15 crypto mining apps, which are offering free mining for their coins, but if you will look closely, so there are only 5 to7 apps which looks legit and most of these apps are following the model of Pi Network.