Pomodoro Timer

A Pomodoro timer structures work into fixed focus blocks separated by short breaks, based on the Pomodoro Technique that Francesco Cirillo developed in the late 1980s. The classic cadence is 25 minutes of focused work followed by a 5-minute break, with a longer 15-minute break after every fourth work block. This timer implements that state machine faithfully and adds one practical upgrade: every duration is configurable. The 25/5/15 split loads by default, but if deep cognitive work suits you better in longer stretches, you can set 45 or 50 minute focus blocks instead, since the technique is a flexible tool rather than a fixed rule. The core value is automation. When a focus block ends, the next phase starts on its own, a short break after work sessions one through three and the long break after session four, so you never have to decide when to rest or manually restart the clock. The audio cues use two distinct frequencies, one tone for work-end and a different tone for break-end, so your ear quickly learns which chime means focus and which means rest. When you grant permission, browser notifications mirror the audio so the cue reaches you even with the tab hidden. A session counter tracks how many real focus blocks you have completed, surviving pause and skip, though it resets on page reload to keep the tool stateless. There is no account, no install, and no behavioral data collected: the timer never records what you work on, how many sessions you finish, or when you take breaks, so your focus patterns stay entirely on your device.