«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» – Magarshak (Calandar 2).
Source : There’s a currency miner in the Mac App Store, and Apple seems OK with it | Ars Technica