Our TV is a few years old and we can't cast to it. I recently found out that we can cast to our Roku player instead, though. There are a lot of apps that do this for iOS (which is what we've got); the most widely used, seemingly, is AirBeamTV's: https://www.airbeam.tv/mirror-your-mac-screen/roku/
Does anyone have experience with mirroring-to-Roku apps? If so, is there one you really like?
Does anyone have experience with mirroring-to-Roku apps? If so, is there one you really like?