Apple, in an official statement:

To mark World AIDS Day 2014, Apple® and leading app developers are inviting customers to help (RED) achieve the goal of an AIDS-free generation. For the next two weeks, a special section of the App Store℠ called Apps for (RED) will offer 25 apps with exclusive new content where all proceeds will go directly to the Global Fund to fight AIDS. In addition, Apple will donate a portion of sales at Apple’s retail and online stores around the world on two of the biggest shopping days of the year: Friday, November 28 and Monday, December 1.

What a great idea. If you wanted to try some new apps, this might be a good time to do it.