I have used Movie Maker mostly for small projects, prototypes and home movies. It is a great and simple tool that meets 75% of most users needs. It is not advanced, so not many professional movie maker options are available (like color correction, white balancing, etc.) However, for basic video that you'll probably want to upload to you tube, this is a pretty good tool. Love the simple and easy to use interface.
The second big draw is communication. The app creates a unified inbox for comments on Facebook and Instagram and messages from Messenger, so that you don’t have to bounce between different apps in order to respond to people. The app doesn’t seem to cover every possible messaging vector inside of Facebook’s services, but it sounds like a handy start. <<