An "Ugly App" is selling faster than Angry Birds at the App Store.

The smart phone app rates how "ugly" a person’s face is, on a scale of 1 to 100.  It’s exploded in popularity and now anti-cyber bullying activists are worried that this could be horrible for vulnerable teens.

It’s called UGLY METER and it works by scanning a users photo for contours, symmetry and proportions. Slightly intrigueing… but also dangerous. 

Available in the App Store, it now has over 5 million downloads placing it just behind Angry Birds in sales.