The best and worst celebrity apps

Celebs need to keep their brand alive. Exposure means money, and there are bills to pay—not to mention that all-important legacy-building. One way for celebs to keep their brand alive is through creating their own apps, often to mixed results. There are successes, like Kim Kardashian's 'Hollywood,' and failures, like Kanye West's aborted 'Only One' venture. Click on to read all about the best and worst celebrity apps.