Apps similar to Stagetimer.io include ProTimer, which is free and open source. Other options are CueStride and OnCueTimer. In total there are three Countdown Timers like Stagetimer.io for the web, Mac and Windows.
ProTimer is a free, open-source timer and rundown app built for conferences, livestreams, churches and other live productions. An operator can run countdown, count-up or clock modes, prepare cues in a rundown, send speaker messages and lower thirds, and place clean timer views...
Serbia
Browser-based stage timer for live events, combining synced countdowns, a shared rundown and messages to the stage. Open views on monitors, TVs, laptops or phones; screens keep counting during network drops. Free rooms support three timers and three screens each.
Israel
OnCueTimer is a browser-based, remote-controlled countdown timer built for live production teams — church services, podcasts, conferences, and broadcasts. Any device becomes a controller or fullscreen display, synced in real time. No app download, no hardware.
