Secret is an iOS app that allows people to share messages anonymously within their circle of friends, friends of friends, and publicly. It differs from other anonymous sharing apps such as PostSecret and Whisper in that it is intended for sharing primarily with friends, potentially making it more interesting and addictive for people reading the updates. It was founded by David Byttow, the former technical lead for Square Wallet, and Chrys Bader-Wechseler, a former Google product manager at Google+, Photovine and YouTube.
Similar apps to Secret are:
Yik Yak App