PlanMill has released a new user interface (UI) to address technical issues with the old UI, support increased mobile use, and provide a more modern look and feel. The new UI is responsive for mobile use and follows Google's Material design. It includes tabs vertically on the left side rather than grouped at the top. Features like time tracking, invoices, and expenses now have their own areas. The amount of visible buttons depends on device scaling. Support for the old UI will eventually end after proper communication.