It lets you organise your visit - select talks to be reminded of (with warnings in case of conflicts) or hide the topics you're less interested in. Schedules are shown in whatever format you like - block schedules, plain timetables, or a clear now-and-next screen on the day itself.
Or just put a widget on your homescreen which will always show you what's next.
Author: Wilmer van der Gaast
Market link: net.gaast.giggity
Web site: https://gaa.st/giggity
Market downloads: 5,000-10,000
Market rating: 4.3 / 5.0