Run a free conference timer with queued countdowns, a fullscreen display link, and private control from any browser.
A conference timer keeps keynotes, panels, breaks, and closing remarks on schedule without screen sharing or installed software. Because Questro runs in any modern browser, the AV team can open a fullscreen display on a stage monitor or confidence screen in seconds, while a producer keeps a separate control link on a phone or laptop. There is nothing to download on the venue machine, no plugin to approve, and no account required to try it. Speakers see one clear, readable countdown, and the operator keeps timing adjustments off the public screen so the room never sees the controls.
Most conference delays start when one session runs long and pushes everything after it. With a queued run of show, the operator builds every segment in order before doors open: keynote, panel, audience Q&A, break, and closing. During the event the operator can add or remove a minute, jump to the next segment, or send a short wrap-up cue without walking on stage or interrupting the speaker. Each presenter reads the same countdown, so transitions stay tight and the closing session keeps the time it was promised. Rehearsing with the real display device beforehand also catches font size and visibility issues before the audience arrives.
It is easier to see how a conference timer works from a real queue than from a feature list. A single-track conference day might load like this: doors and walk-in 30 minutes, host welcome 5 minutes, opening keynote 40 minutes, keynote Q&A 10 minutes, stage reset 5 minutes, first breakout block 45 minutes, coffee break 20 minutes, customer panel 35 minutes, audience questions 15 minutes, five lightning talks at 7 minutes each, afternoon break 15 minutes, closing keynote 30 minutes, awards and thank-yous 10 minutes, and a 5 minute buffer before the room turns over for the evening reception. Two details matter more than the exact durations. First, the transitions are timers too: a stage reset that is not on the queue is a stage reset nobody is timing, and that is where a conference day usually loses its first ten minutes. Second, the buffer at the end is real time rather than padding to be spent early, because it is what absorbs the overrun a long day always produces.
Two hours before doors, the producer opens the control link on the laptop that will stay at the production desk, and the display link fullscreen on the stage monitor and the confidence screen. Thirty minutes before doors, the queue is read against the printed run of show one line at a time, because a timer built the night before and an agenda changed that morning are not the same document. Five minutes before the welcome, the walk-in countdown starts so the room can see how long it has. When the host reaches the lectern the producer moves to the next timer from a phone rather than the desk, because by then the producer is usually standing at the back of the room. During a talk the producer watches two clocks: the countdown on the display and the wall clock the venue schedule is contracted against, since the gap between them decides whether the closing keynote keeps its full thirty minutes. At the two-minute mark the producer sends a wrap-up cue instead of walking into the line of sight of the speaker. Between sessions the producer resets, confirms the next segment is queued, and checks that the display device has not gone to sleep.
Most conference timer problems are venue problems, and all of them are cheap to find the day before. Check the countdown from the furthest point a speaker will ever read it from, not from the operator desk: a size that is comfortable on a laptop can be unreadable across a ballroom. Test on the exact display device the venue will use, because a hotel screen, a scaler, and a browser at the wrong zoom level each change what the room sees. Turn off sleep, screensaver, and auto-lock on the display machine and keep it on mains power, since a display that dims halfway through a keynote is the failure operators report most. Give the timer its own browser window rather than a tab in a crowded group, and confirm the window sits on the correct output before anyone is watching. Check the network from the display position rather than from the production desk, and keep a phone hotspot ready. Confirm contrast under the stage lighting that will actually be used, not the house lights that happen to be on during setup. Finally, agree a hand signal with the speakers as a fallback, so the program survives even if the screen does not.
The honest answer is that the best conference timer is the one the venue can display without installing anything and the producer can drive from wherever they end up standing. Four things separate the tools that survive event day from the ones that do not. The speaker view and the operator view have to be separate, so the room never sees a control bar. The whole agenda has to be queueable in advance, because building timers during a live program is how segments get skipped. The operator has to be able to add time and send a cue without interrupting the talk. And the display has to run on hardware nobody on your team controls, which in practice means a browser page rather than an installed application. Questro is built around those four requirements: a fullscreen display link, a private control link, a queued run of show, and short cue messages. Whatever tool you choose, test it against those four before the event rather than during it.
Decide where the time will come from before the day starts, not while a keynote is overrunning. Mark each segment as absorbing or protected: breaks, transitions, and the end-of-day buffer can give up minutes, while the closing keynote, an awards moment, and anything with a hard external commitment such as a livestream window cannot. When a session runs over, take the time from the nearest absorbing segment and adjust its timer immediately, so every later countdown still tells the truth. Tell the affected speaker before they walk on rather than shortening their countdown silently, because a presenter who discovers a lost five minutes on stage will rush the wrong part of the talk. If the overrun is larger than the remaining buffer, the recovery is editorial rather than technical: cut a lightning talk, shorten an audience Q&A, or trim a break, then update the queue so the display and the run of show agree again.
A phone stopwatch on the lectern is invisible from anywhere except the lectern, and it cannot be adjusted by anyone who is not standing there. Presentation software timers live inside the slide deck, which means they disappear when the deck changes, they belong to the speaker rather than the producer, and the next presenter waiting in the wings cannot see them. The clock in the corner of the venue laptop tells the room what time it is, not how much time is left, and it is the wrong reference once the schedule has already slipped. A dedicated conference timer separates the two roles the room actually has: a display that only counts down, and a control surface only the producer touches. That separation is the whole point, and it is why the same countdown can serve the stage monitor, the confidence screen, and the green room at the same time.