Screen flow is a recording app it helps you record the computer on you screen, and you can record your face to put it on the screen with your computer screen. You have a lot of options in screen flow. Its a software app you can put on the computer.
I used a lot of tools in this screen flow like split clip, call outs and a lot of tools in screen flow. There are a lot of tools callout, split clip, video action and you can add a text box.