Time Keeping for meetups/conferences just got a whole lot easier!
This is the official session timer app from builderscon is available for all of your meetup/conference time keeping needs. Keep track of how much time is left for your speakers, and get notifications at appropriate time intervals.
Web version is available at http://web.timer.builderscon.io
Source code is available at https://github.com/builderscon/session-timer. We welcome your feedback/contributions!