Cloak App helps you to avoid your friends : The Anti Social Network

The rise of social media networks and services have made it very easy for people to reach out and be heard. But a new iOS app called Cloak uses these very services for the opposite effect. Cloak taps into location data from the people you follow on Instagram and Foursquare. You can then flag those people and Cloak will alert you if they’re nearby.

Cloak's tagline is "Incognito mode for real life." You might say it's an anti-social network. Click on a bubble on the map, and you'll see a person's name, his or her location and about how long ago he or she checked in there. If it was a while ago, the image will appear faded, like a ghost.

The app lets people set up push alerts for acquaintances they'd prefer to avoid such as exes, frenemies or annoying co-workers. If someone wants to drop off the grid completely, he can set up these notifications for everyone in his social networks -- presumably while sneaking through dark alleys or hiding behind sunglasses and a hat.

The app only works with Foursquare and Instagram for now, so it has limited usefulness if your friends aren't active on those networks. But the developers hope to add Facebook soon. They say Twitter's location information is still weak, but they may add that service as well someday.