Yes but it's buried down in the `Build` instructions. It should be in the About section: "A simple recording program for Windows with the ability to record screens and audio on your computer." (emphasis mine)

Yikes! win 10 or newer? Win 10 has screen record, with or without audio, built in.

I'm always looking for quick simple browser based things to suggest to friends, and if there is anything cheaper than corel videostudio (when it's on sale) - for win 8, win 7 - which is my preferred tool for the past so many years.

I do suggest putting win 10 only prominently.

To build it, yes. It never mentions it is for running on Windows.