Apple has recently removed Calendar 2 app, which is a Monero-mining app from their Mac App Store. The app allowed users to mine Monero in the background, but Apple have taken this decision after they said it put a huge burden on the user’s devices. The app allowed its users to access premium features by purchasing a full-app purchase, or alternatively they could get the same access by donating some of their CPU resources to mine the cryptocurrency There are many reasons that Apple have made the decision to remove this app, but mainly because it ate much more CPU power than the app had originally claimed it would. Not only this, but once you signed up to the Monero mining, users found that it was impossible to opt out of this option. After it was discovered that the app was violating the guidelines that stated; “…design your app to use power effectively. Apps should not rapidly drain battery, generate heat, or put unnecessary strain on device resources.” The decision was made to finally pull the app after it was revealed that any issues would take a long time to iron out. They worked closely with Qbix to get the app removed quickly, with a statement reading; “Ultimately, even though we technically could have remedied the situation and continued on benefiting from the pretty large income such a miner generates, we tool the above as a sign that we should get out of the ‘mining business’ before we get sucked into the Proof of Work morass of incentives…I believe in the future of cryptocurrency, just not Proof of Work. So we started a spinoff company, Intercoin Inc. to make a global currency and payment network that doesn’t rely on Proof of Work, Proof of Stake and can handle an unlimited number of transactions at the same time.” Only time will tell if this new app will take off, but one thing is for sure, you will no longer be able to mine Monero, via the Apple app store.