Rather than wait to build and deploy user interface changes to the device, wouldn't it be better to have them show up instantly? This app allows you to edit your UI on your desktop where it is convenient, but have you changes show up instantly on unlimited testing devices.
Another new feature is cloud bindings. This makes developing Firebase enabled apps even easier! Rather than writing code for an observer, in the GUI editor you can link a UI element directly to a database location and have it sync in real time!