I like that it can be used as both a scheduler and reminder system. It's easy to use and helps me keep track of all my appointments in one place. The reminders are very helpful too! Sometimes there isn't any way around sending multiple emails back and forth between myself and someone else because they don't follow directions well enough or have the time needed to respond properly. This happens more often than not so make sure you're prepared before using this app. We've been able to save tons of time by having our meetings scheduled through wizcal instead of emailing each other about them constantly.