90 Minute Pomodoro Timer

Ninety minutes matches the body's natural ultradian focus cycle — the deepest Pomodoro-style block, with the red dial's wedge shrinking across a full wave of concentration before a real rest.

Why a 90-minute Pomodoro dial works

Ultradian sprints — a block matched to the body's ~90-minute focus cycle
Deep creative work — long enough for genuine flow
Marathon study — a full revision wave before a proper break
Big single tasks — sustained effort on one demanding project
Sustainable deep work — one full cycle, then real recovery

About the 90 Minute Pomodoro Timer

Ninety minutes tracks the brain's natural rhythm of focus and fatigue — the shrinking wedge carries you through one full cycle, then signals the recovery that keeps the next one sharp.

Frequently Asked Questions

Does the 90 minute pomodoro timer keep accurate time in the background?

Yes. It counts down against the real clock rather than ticking in the tab, so your 90 minute pomodoro timer stays accurate even if you switch tabs or lock your screen — and the alarm still sounds at zero.

Can I change the duration, or switch away from the pomodoro clockface?

This page opens preset to 90 minutes on the Pomodoro clockface, but you can set any duration and switch to a different clockface at any time using the controls below the timer.