Excellent!
I put off purchasing Screens for many years and used VNC lite. VNC lite is free and works well enough for checking on status of things.
Now that I have used Screens for a few days I realize what I was missing!
Everything works well. Even over the internet and even using cell coverage was very usable.
Not sure if the reviewer about not buying if using FiOS is completely accurate about using non Apple routers. I just switched from Apple routers to eero this week and Screens never missed a beat with external access. Perhaps the FiOS router is a problem.
Anyway, Screens is an excellent product.
macsurveyr about
Screens: VNC Remote Desktop, v4.2.3