HubDNS provides a Dynamic DNS client which integrates with the TurnKey Hub. You can use your own domain, or the free TKLAPP.com domain.
Why? Dynamic DNS allows you to create a hostname that points to your home or office dynamic IP address, providing an easy-to-remember URL for quick access.
For an overview, see the announcement.
HubDNS is free open source software. View the code on GitHub.