The company made a number of changes in its App Store review guidelines recently, with the cryptocurrency ban among them.
Cryptocurrency mining has been observed in various situations, with mining scripts being served through ads on YouTube, Drupal flaws being exploited to spread mining scripts, legitimate video download sites turning to mining and some websites unknowingly serving up such scripts.
"Apps, including any third-party advertisements displayed within them, may not run unrelated background processes, such as cryptocurrency mining," Apple said.
Given the number of initial coin offerings that have been involved in scams, Apple said that apps that helped ICOs must come from "established banks, securities firms and futures commission merchants, or other approved financial institutions and must comply with all applicable law".
The company also said that cryptocurrency apps should not offer the currency for completing tasks.
And apps were allowed to facilitate the storage of virtual currencies if the developers who offered them were enrolled in the App Store as an organisation.