It runs on any Mac with macOS 10.12 or newer. Intel and Apple Silicon are both supported.
The app sits in the menu bar. It extends screen mirroring and local media streaming to Smart TVs, Apple TV, Chromecast, AirPlay 2, DLNA, and Roku devices. No cables. No extra hardware.
You can mirror any connected monitor. Stream common formats — AVI, MP4, MKV, MOV, and others. Capture mouse clicks during a presentation. Change subtitle font, size, and color when casting to Chromecast. Build playlists for continuous playback.
day-to-day changes
Version 2.14 tightens a few loose ends that used to interrupt a stream. The Mac no longer drifts into sleep mid-session — a small fix that removes one of those silent annoyances when you settle in to watch a long playlist. Compatibility with macOS 26 smoothed out as well, so the app stays predictable on the newest system.
Pause behaves now. Earlier builds could ignore the command on certain setups; that is gone. Device discovery is more reliable too. The list of available screens and speakers populates without the occasional blank stare.
Chromecast playback for some video files was patched. If a particular MKV or AVI stuttered before, 2.14 likely handles it.
Silent transcoding
Speed is not flashy here. It is consistent. Real-time transcoding keeps up without the fan kicking in on an M1 or M2 machine. On older Intel Macs, you might hear the fans during a 1080p stream — nothing alarming, just the machine working.
Memory use stays around 200 MB during a mirroring session. CPU sits low for direct screen casting, higher when transcoding unsupported formats on the fly. The app releases resources quickly when you close the stream. No lingering background processes.
Stability in daily use is uneventful in the best way. It does not crash mid-movie. It does not lose sync with a Chromecast after an hour. For those seeking a JustStream Pro Mac torrent, the real draw is that it simply holds the connection.
JustStream PRO is the more capable sibling of JustStream. A quiet tool you reach for when you need it.
