Apple bans cryptomonite mining on its devices.

Apple explicitly forbids applications that use device computing power to get cryptomonodes in its new Developer Guide.
In the Hardware Compatibility section, Apple notes that "apps, including any third-party ads displayed in them, can not run independent background processes, such as exploiting cryptomonas."
In addition, an entire iOS, macOS, watchOS, and tvOS digital coin section contains the following:
Applications can facilitate storage in virtual currency, provided they are provided by developers who are registered as an organization. Additionally, applications can not mink directly cryptomones, unless exploitation is done in cloud or otherwise.
Applications may facilitate the transfer of cryptomonas to an approved exchange, provided that they are offered by the exchange itself, although applications facilitating initial currency offers (ICO) must come from recognized banks, securities companies, traders with futures (FCM) or approved financial institutions. Also, cryptomonade-related applications can not provide money for performing tasks such as downloading other applications, encouraging other users.

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At the end of May, the only references to digital coins in Apple's guides were that applications can facilitate such transactions "provided they comply with all state and federal laws for the territories in which the application works," AppleInsider writes.
Cryptomonas exploitation has become a popular way to make money. But the mining of digital coins requires a lot of computing power, causing users to buy video cards and use large networks of devices, including iPhones and iPads.
Apple and cryptomonas
In 2013 and 2014, Apple deinterlaced Coinbase and other apps related to cryptomones from the App Store, due to an anonymous "unresolved problem"; which led to the original set of developer rules, and apps later returned to the App Store. For a while in 2017, Coinbase was the number one app available in the App Store.
In March, Apple removed Calendar 2 from the Mac App Store because the application used the computing power of users to mince cryptomonoes for premium features, writes The Verge. At that time, Calendar 2 developer said Apple removed the app because it violated an App Store statement: "Applications should not lead to rapid battery discharge, generate excessive heat, or make unnecessary pressure on the device's resources."