CRACK

Crack (咔嚓) is a Chinese picture-chatting application. It enables users to check messages within a limited period of time and delete them after reading. All pictures and images on Crack have a lifetime of 1 to 10 seconds. Users should capture photos and send to their friends, and then after a few seconds the photos will be automatically deleted. Other users will not be permitted to take screenshots or capture photos. Due to this reason users are able to share freaky or ugly photos that they are afraid of sharing, for they will exist for only ten seconds. Without any promotions, Crack has been able to attract thousands of users.