One person runs the timer. Everyone else opens a link, scans a code or types five letters, and watches the same clock. No account for the host, none for the viewers.
Screens are timed by the server, not by each phone, so they stay within a fraction of a second of each other with no drift over a long round.
The free tier gives you one timer, three saved presets and five viewers, with no account and no ads. ClockKeepers Pro is $7.99 once, with no subscription, and adds an 8-timer board, branding, a permanent code, more themes and unlimited viewers and presets.
Honestly, the idea of a shared countdown link is not unique. Free tools such as ShareMyTimer, RemoteTimer.app and CountLink offer it, and some need no server at all. If all you want is a plain countdown on a second screen, one of those is enough.
ClockKeepers adds the packaging around the link: ready-made Tabata, EMOM, AMRAP, boxing, Pomodoro and speech programs, phase colors on the display (work, rest, prepare), a round counter, a multi-timer board, and a finish alarm that runs on the host phone. For events with agendas, audience questions and many simultaneous connections, see ClockKeepers vs Stagetimer.
No. Viewers open the link or type the code. They install nothing.
No. ClockKeepers has no accounts.
Five. ClockKeepers Pro removes the cap.
A free code is temporary for that broadcast. A permanent club code is part of ClockKeepers Pro.
One timer and five viewers free, no account, no ads. ClockKeepers Pro is $7.99 once.
ClockKeepers