Mac App Store App 'Calendar 2' Mines Cryptocurrency by Default, but Feature is Being Removed [Updated]

A Mac App Store app called Calendar 2 has been mining a digital coin known as Monero using customers' machines, and Apple took no action against the app despite knowing about it for at least 24 hours.

As Ars Technica points out, Calendar 2 is supposed to have an opt-in feature that allows users to choose to let the app mine cryptocurrency to unlock paid features that normally require an in-app purchase, but instead, it's been bugged and has been mining Monero by default.

calendar2moneromining

Image via Ars Technica

Surprisingly enough, Apple has allowed the Calendar 2 app to remain available in the Mac App Store despite the fact that it openly embraces cryptocurrency mining. Ars Technica asked Apple if the app violated App Store policies, but did not receive a response, and more than 24 hours after Ars contacted Apple, the app remains available for purchase in the Mac App Store.

It's not clear if Apple has left the app in place because it approves of allowing cryptocurrency mining in the Mac App Store as a way to enable paid features or because Mac App Store apps often receive little attention from the company.

Regardless, because of the attention the feature has received from the media today, Qbix, the company behind Calendar 2, has decided to remove the feature from the app. Qbix founder Gregory Magarshak told Ars Technica that the currency miner's rollout had been complicated by bugs that prevented it from working as intended, with the miner running continuously even when not approved by the user. Other bugs caused it to use too much of a Mac's resources.

Magarshak originally said Qbix would update the app to fix the bugs, but he later told Ars that Qbix has decided to remove the miner in the app, so there will be no way to get free features via cryptocurrency mining going forward. From an email he sent to Ars Technica:

We have decided to REMOVE the miner in the app. The next version will remove the option to get free features via mining. This is for three reasons:

1) The company which provided us the miner library did not disclose its source code, and it would take too long for them to fix the root cause of the CPU issue.

2) The rollout had a perfect storm of bugs which made it seem like our company *wanted* to mine crypto-currency without people's permission, and that goes against our whole ethos and vision for Qbix.

3) My own personal feeling that Proof of Work has a dangerous set of incentives which can lead to electricity waste on a global scale we've never seen before. We don't want to get sucked into this set of incentives, and hopefully our decision to ultimately remove the miner will set some sort of precedent for other apps as well.

Even though the features are going to be removed from the Mac App Store app, it continues to be unclear how Apple feels about cryptocurrency mining within apps and if the company's apparent indifference on the issue is going to lead to additional Mac apps attempting to go this path to implement features in exchange for processing power.

Websites and malware have been sneakily mining for currency by taking advantage of unsupecting users, but Calendar 2's method of openly offering features in exchange for free mining is new to the Mac App Store.

Update: Calendar 2 is no longer available from the Mac App Store, but it is not clear if it was removed by Qbix or pulled by Apple.

Update 2: Apple did indeed pull the Calendar 2 app from the Mac App Store after learning of the currency mining issue. Qbix says it worked with Apple to remove the feature and introduced a new version of the app with no mining.

Top Rated Comments

now i see it Avatar
80 months ago
Bitcoin mining is a plague. Such a wasteful wasteful wasteful use of resources to create what only amounts to an agreement between people. Its like burning down an entire forest so a few people can say they're richer than the others. Despicable.
Score: 38 Votes (Like | Disagree)
CanadianGuy Avatar
80 months ago
Apple has pulled the app until the developer promises to pay 30% of the coins mined to Apple.
Score: 33 Votes (Like | Disagree)
beaker7 Avatar
80 months ago
The intern that ran the Mac App Store has left the company so unlikely to get a response.
[doublepost=1520893341][/doublepost]
Normally money is based on I-ow-you (with a certain standard, gold, silver or holding some other assets to back it up)
Gold standard ended in 1973. Fiat currencies are worth whatever someone is willing to pay for them, just like crypto.
Score: 11 Votes (Like | Disagree)
Cougarcat Avatar
80 months ago
Lol at the word choice: “unobtrusively.”

More accurate: “calendar destroys your battery in the background.”
Score: 10 Votes (Like | Disagree)
LinusR Avatar
80 months ago
It's not clear if Apple has left the app in place because it approves of allowing cryptocurrency mining in the Mac App Store as a way to enable paid features or because Mac App Store apps often receive little attention from the company.
If the latter is true, they might as well just close the MAS down. That would be utterly embarrassing for Apple. There does not appear to be an alternative to the perception that Apple doesn't care about the MAS because as it doesn't generate as much profit as the iTunes store. Shame.
Score: 9 Votes (Like | Disagree)
nwcs Avatar
80 months ago
It is a bad precedent to use a miner for free features. Especially since there is not a rational basis for the value of crypto currencies. More of them keep being rolled out which I think highlights the coming problem for them. Block chain will absolutely endure but I don’t think crypto currencies will have long term value.

Yes, traditional currencies are not what they used to be under the gold and/or silver standard but they are generally recognized and has an entity that at least promises to honor it. That’s more than today’s crypto flavor of the month.
Score: 8 Votes (Like | Disagree)

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