Not worth the cost.

Bought the app on sale and still not worth $10. VNCViewer from RealVNC is free. The only thing this app has that one doesnt is touch mode mouse movement. That mode isnt even great because you cant lock the zoom. If you do some slight finger dragging in that mode it drags the whole screen around.

Rhomboidspace about Screens: VNC Remote Desktop, v4.2.3