Cloak

This Newsweek article almost reads like an April 1 joke. But there such a thing as Cloak the anti-social app. They in the business of helping you "Avoid exes, co-workers, that guy who likes to stop and chat— anyone you'd rather not run into"

A worthy effort in the time of Facebook and the like working relentlessly to pull people out of their anonymous comfort zones and forcing them to share what they may not want to. The creator of Cloak sees this as a part of a growing trend.

“You’ve seen that with recent apps like Secret or Snapchat where anonymity is big,” he said. “There’s definitely this area right now—not the anti-social network per se, but control over your network and privacy as well.”