NO SIGNUP · NO SERVER
THE LINK IS THE SYNC
Classroom Timer

Classroom Timer — For Group Work, Quizzes And Transitions

Group work, quiz rounds, silent reading, transition time between activities — a visible shared countdown ends the “how much longer” questions on its own. Project it fullscreen or share the link to student devices.

00servers to run this
Anyone opening your link right now sees exactly this.

Change the countdown

The board above is set to 10 minutes, ready when you are — adjust it here if you need something else.

Common questions

Is this better than just projecting a phone timer app?

The advantage is sharing: instead of only the front-screen clock, students can pull up the identical countdown on their own device too, so a quick glance answers "how much longer" without asking.

Can I reuse the same setup for different activities during one lesson?

Yes — set a new quick-timer duration for each activity and share the fresh link; each activity gets its own clean countdown.

Does this need a school Wi-Fi login or account?

No signup for you or your students. The page itself needs to load once (standard classroom Wi-Fi/projector network is enough), and after that each device counts down locally.