https://www.developer-tech.com/news/2018/jun/12/apple-crypto-mining-ios-app-store/

Apple clearly isn’t a fan of cryptocurrency with its new guidelines saying it will no longer “hodl” on to support for mining apps in the iOS App Store.

The guidelines say that cryptocurrency mining will be disallowed in App Store apps unless the processing is being performed off-device such as on a remote server or cloud provider.