It's a great concept but DON'T BUY IT. This has the actual WORST UI and customization options I've ever seen in any piece of software.
Setting it up is relatively easy, but changing anything is a nightmare. It's full of repetitive UX where you have to click not 1, not 10, but hundreds of times for a simple task like changing the size of a avatar batch. The menus are super hidden and non-descriptive so it's up to you to change and test what any of them does, if you can even find the setting you want at all.
Also, what you're getting is basically a front-end, a terrible UI just to save your settings. All the back-ends are hidden away so it's bricked when the devs stop supporting it.

A great addition to my stream. Easy to setup. I do love it. My only real gripe is PLEASE PLEASE PLEASE release a standalone version. Having 2 games open on steam messes up the overlay a bit, and it's obnoxious. It'd be nice to have this open without having to deal with that.