Every timing method in one page

Focus cycles (Pomodoro): work, short break, repeat — with a longer break every few rounds. Presets for the classic 25/5, the DeskTime 52/17, and the ultradian 90/30.
Intervals: a work/rest sprint repeated for a set number of rounds — study sprints, HIIT, Tabata (20/10 ×8).
Flowtime: counts up while you're in the zone; when you stop, it suggests a break proportional to the focus you just put in — no arbitrary bell cutting you off mid-thought.
Timebox: one countdown for one task.
Stopwatch: count up, with laps.

Made to actually help you focus

The remaining time rides in the browser-tab title, so a background tab still tells you where you are. A hand-written chime marks each change (toggle it off for a silent room), with an optional desktop notification and a "keep screen awake" switch for long sessions. Your focus tally — blocks finished and time focused today — is kept in this browser only.

No account, no tracking, no catch

Most "free Pomodoro" sites want a login, show ads, and quietly measure your habits. Tempo has no server to send anything to: no account, no analytics, no sound files fetched from anywhere. Save the page and it works with the internet off. Keyboard: Space starts and pauses, R resets.

Part of K-Engine Local Tools — free, privacy-respecting utilities that run on your device. The clock and the chime are hand-written; view-source and you're reading them. MIT licensed, from the K-Engine workshop · download the source.