Mac Life magazine partnered with Pixelmator in their January 2016 issue to offer the Mac app for free. This app usually goes for $30 in the Mac App Store.
The way this works is you go to: http://www.pixelmator.com/special/
It will ask you a question about a phrase used in the magazine. You can use the iOS app to download one issue for free: https://itunes.apple.com/us/app/m...17012?mt=8
The cover of the January issue says "free photo editor" - Pixelmator is the photo editing they are referring to.
Great deal! Free magazine and free Pixelmator!