Feature tour · 4 of 26
Rooms
Share your screens with everyone in the room
Choose what the room sees: a whole screen or a spare desktop, and on a Mac also a single window or every window belonging to one app. It arrives on every tablet, phone and laptop at once and in full motion, so a video or a live demo holds up rather than only a deck. Nobody signs in, nothing is scheduled, and none of it leaves the network you are all on. On a Windows PC, a Room shares one screen or spare desktop, without sound.
Support: Start or join a RoomShare a window, an app, or two at once
Share a single window or every window of one app. Add a second display or window to compare two things at once, including spare desktops. Each viewer, on a Mac, a PC or Android, chooses how the two pictures fit their own screen.
The source does not have to be your main screen
A spare desktop counts, and so does the screen already running on the tablet beside you: lay one out the way the room should see it, then share that. A trusted device can also send its own screen to your computer and have the computer carry it out, so a colleague shows something from their tablet without anybody pairing again or the room leaving and joining something else.
The sound goes with the picture
Audio travels on a channel of its own, because a missing moment of sound is more noticeable than a missing frame, and it arrives uncompressed carrying the timestamp it was captured on. The room hears what you hear, lined up with what it is watching.
Fast video holds up, not just slides
The picture is not slowed to a rate chosen for slides, and no frame is invented to cover a gap. What the room sees are the frames the source genuinely produced, which is what makes a video or a live demo worth sharing this way.
A Room code lets anyone in
Six characters, read off the screen. Nobody pairs anything first, and nobody is still let in once the Room stops.
Somebody else can drive, if you let them
Viewers watch by default. A device you added yourself can pick the pointer up while it is free; anybody who came in on the code has to ask, and the request lands on your computer. One person drives at a time, and you can take it back whenever you like.
A Room and Mirror are different things, and both stay
The comparison is not another second-screen app. It is the four-figure hardware sold to get one laptop onto one room display. This is software, it does the inverse, and it reaches every seat instead of one wall.
| Aspect | Mirror | Room |
|---|---|---|
| Display arrangementOn a Mac | Changed | Untouched |
| Encoders | One per client | One, or two with a smaller picture |
| Letterboxing | Encoded into the stream | Drawn by each viewer |
| Viewers | One | Many |
| App windows you dragged thereOn a Mac | Come back when it ends | Unaffected |
Mirror is "this tablet is that screen". A Room is "everybody can see that screen".
The marked rows describe a Mac. On Windows, Mirror copies a screen without changing the display arrangement, so app windows stay where they are.