Apple updated its App Store review guidelines last week, during the WWDC 2018 conference.
Titled Cryptocurrencies, new section 3.1.5 (b) provides five clear rules for what will and won't be allowed in macOS, iOS, tvOS, and watchOS apps going forward. The move comes at a time when 'cryptojacking', a malware attack wherein malicious attackers scrumptiously hijack a computer or a phone's computing power to mine cryptocurrencies, is a growing menace. "Apps, including any third party advertisements displayed within them, may not run unrelated background processes, such as cryptocurrency mining", the new guideline reads.More news: Donald Trump, Kim Jong-un arrive in Singapore for historic summit
However, cryptocurrency mining apps that don't use device processing power but instead run in the cloud are allowed in the App Store.
Instead, the iPhone-maker is encouraging developers to embrace its new Safari App Extensions platform which was introduced back in 2010. These conditions extend to apps providing cryptocurrency futures trading, and other crypto-securities or quasi-securities trading.
Apple has previously blocked apps for supporting cryptocurrencies it disapproves of.More news: Liverpool confirm Can, Flanagan's exit
ICOs must comply with "all applicable laws", Apple said.
After the cryptominer was found to contain buggy code that made CPU usage on users devices spike, Apple pulled Calendar 2 from the macOS App Store.
The company also warned developers that any apps that facilitate initial coin offerings (ICOs) and cryptocurrency futures trading must come from established banks and approved financial firms. "Apps may facilitate virtual currency storage, provided they are offered by developers enrolled as an organization", the policy states. In a dedicated cryptocurrency section, the company goes on to break down in more detail what is - and, crucially, is not - permissible.More news: Hilary Duff Announces She’s Expecting a "Little Princess" With Boyfriend Matthew Koma