Catch 10s to reply is a free social networking app available for iPhone. Developed by YOLO Technologies Inc., this app allows users to send pictures to their friends, who then have 10 seconds to catch it and reply. With Catch 10s to reply, users can test their friends' response time and see who can reply the fastest.

The app's main feature is the ability to send pictures and set a time limit for friends to respond. This adds a competitive element to the app, as users can challenge their friends to reply within the given time frame. The app also provides statistics on response times, allowing users to track their friends' performance.

Catch 10s to reply is a fun and interactive way to engage with friends and test their response time. Whether you're looking to challenge your friends or simply want to see who can reply the fastest, this app offers an entertaining social experience.