The ability to see all of my fermentation data in one place. It's easy to use and intuitive. There are some things that could be improved. For example, it would be nice if you could assign a temperature zone to a fermenter instead of having to manually enter each individual temp. Also, there doesn't seem to be an option to have the program automatically update the fermentation schedule when doing a new brew day. This is a great tool for tracking your fermentation process, but sometimes it can get confusing with all of the different options available. We've been able to track our fermentation process much more efficiently than before because we're able to keep track of everything in one place.