So far the promised features are inventory management for your retainers, scheduling events, chat, and handling market boards for an exchange of kupo nuts or moogle coins. (No word yet on how you get either of those.) It should provide a nice bit of management functionality if you’re going to be away from the computer, so keep your eyes peeled for more details on what you can do and the supposed premium services that will be offered with the app.
Source: Official Site