30 Minute Timer
One tap, 30 minutes, a clear chime at zero — and the countdown lives in the tab title, so you can work in another window meanwhile.
Half an hour of honest work
Thirty minutes is the smallest block in which deep work actually happens. Ten minutes gets you started; thirty gets you through something — a report section, a coding task, a chapter of real studying. Turn off notifications, start the countdown, and let the ticking tab title be the only clock you check.
It's a standard workout length too: a full home session (warm-up, 20 minutes of work, cool-down) fits exactly, and most 30-minute fitness videos assume you'll be watching the clock — this timer does it for you, chime included.
One caution from sleep research: 30 minutes is not the ideal nap. Naps beyond ~20 minutes drop you into deeper sleep stages, and the chime may wake you groggy (sleep inertia). NASA's much-cited pilot study used a ~26-minute nap; if you nap on a schedule, consider setting 20–26 minutes on the custom timer instead of a full 30.
30-minute blocks that work
| Activity | Note |
|---|---|
| Deep-work block | One task, notifications off |
| Full home workout | Warm-up + work + cool-down |
| Laundry / oven check | Chime instead of "I forgot" |
| Nap | ⚠ 20–26 min is better — see above |
| Language practice | One lesson + review fits |
Frequently asked questions
Is 30 minutes better than Pomodoro's 25?
Neither is magic. 25/5 is a rhythm that survives a full day; a single 30 suits one-off tasks. If you'll repeat cycles, use the Pomodoro timer.
Will I hear the chime from another room?
It plays at your device's volume once, at zero. For kitchen or laundry use, take the device with you or raise the volume — the tab title alone won't help from another room.
Does it keep running in a background tab?
Yes, with the countdown visible in the tab title.
Why not just use my phone's clock app?
No reason not to — but a browser tab needs no app, no permissions, and the on-screen countdown doubles as a visible commitment device while you work.