What is the Pomodoro Technique?

A time-management method created by Francesco Cirillo in the 1980s: 25 minutes of focused work followed by a 5-minute break is one pomodoro (Italian for tomato), and every 4 pomodoros earn a longer 15–30 min break. Widely used by engineers and students to keep focus while managing fatigue.

Does it remember the timer state across tabs?

Your settings (work / break durations, cycle count, audio on/off) are saved to localStorage, but the *running* state (elapsed time, current phase) is **not** persisted. Closing or reloading the tab restarts from idle. Use a separate notes app to track progress across multi-set days.

How does the chime work?

A short 3–4 note Sine-wave chime is synthesised in-browser with the Web Audio API — no external audio files. Work-end uses a descending tone (880→660→440 Hz), break-end an ascending one (440→660→880 Hz), set-end a C-major chord (523→659→784→1047 Hz). Browsers require a user gesture before audio works, so the AudioContext is unlocked on the first Start click.

Does it stay accurate in background tabs?

Phase transitions use `performance.now()` deltas, so they remain accurate even when setInterval is throttled by the browser. However, some browsers mute audio in background tabs — keep this tab in the foreground if the chime matters.

What are the setting limits?

Work 1–90 min, short break 1–30 min, long break 1–60 min, cycles 1–12. You can use the canonical 25/5/15/4 pattern or customise for ultradian (50/10/20/2), microlearning (15/3/10/6), or anything in between.

Is anything uploaded?

No. Timer logic, settings and chime synthesis all run inside your browser; nothing is sent over the network.

Back to Time

Pomodoro Timer (25 / 5 / long-break cycle)

A browser-only Pomodoro timer for focused work cycles: 25 minutes work + 5 minutes short break, then a 15–30 minute long break every fourth pomodoro. Customise work / short-break / long-break minutes, number of cycles and the audio chime — settings autosave to localStorage. Phase-end chimes are synthesised with the Web Audio API (descending for work-end, ascending for break-end, a C-major chord for set-end). Uses `performance.now()` deltas so transitions stay accurate even in throttled background tabs. Timer logic, settings and audio all run inside your browser — nothing is uploaded.

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How to use

1) Adjust the settings: work duration (default 25 min), short break (5 min), long break (15 min) and the number of work sessions per set (4). Settings are saved to localStorage so you start with the same values next time. 2) Press Start — the first work phase begins with a live countdown and progress bar. 3) When a phase ends, an audio chime plays (toggle in settings) and the next phase begins automatically. Pause, Reset and Skip are available at any time. 4) After the final work phase, one long break completes the set.

FAQ

What is the Pomodoro Technique?: A time-management method created by Francesco Cirillo in the 1980s: 25 minutes of focused work followed by a 5-minute break is one pomodoro (Italian for tomato), and every 4 pomodoros earn a longer 15–30 min break. Widely used by engineers and students to keep focus while managing fatigue.
Does it remember the timer state across tabs?: Your settings (work / break durations, cycle count, audio on/off) are saved to localStorage, but the *running* state (elapsed time, current phase) is **not** persisted. Closing or reloading the tab restarts from idle. Use a separate notes app to track progress across multi-set days.
How does the chime work?: A short 3–4 note Sine-wave chime is synthesised in-browser with the Web Audio API — no external audio files. Work-end uses a descending tone (880→660→440 Hz), break-end an ascending one (440→660→880 Hz), set-end a C-major chord (523→659→784→1047 Hz). Browsers require a user gesture before audio works, so the AudioContext is unlocked on the first Start click.
Does it stay accurate in background tabs?: Phase transitions use `performance.now()` deltas, so they remain accurate even when setInterval is throttled by the browser. However, some browsers mute audio in background tabs — keep this tab in the foreground if the chime matters.
What are the setting limits?: Work 1–90 min, short break 1–30 min, long break 1–60 min, cycles 1–12. You can use the canonical 25/5/15/4 pattern or customise for ultradian (50/10/20/2), microlearning (15/3/10/6), or anything in between.
Is anything uploaded?: No. Timer logic, settings and chime synthesis all run inside your browser; nothing is sent over the network.

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