What it does

Focus Timer Studio is a single-page timing tool for people who want more than a plain countdown clock.

It combines three use cases in one browser-only workspace:

• preset focus cycles for productivity methods
• a custom one-off countdown
• a simple stopwatch for open-ended timing

How to use it

• Open: https://tedt.org/tools/focus-timer.html
• Pick a mode: preset queue, custom countdown, or stopwatch.
• Choose a productivity preset or edit the session builder values.
• Change the number style and color theme if you want a different visual feel.
• Press Start or use the keyboard shortcuts shown on the page.

Included productivity presets

• Classic Pomodoro
• Deep Work 45/15
• Ultradian 90/20
• 52 / 17 Rhythm
• ADHD Sprint 15/3
• Writer 50/10
• Study Drill 30/5
• 10 Minute Launch

Screenshots

Notes

• Everything runs locally in the browser. No account, no server round-trip, no sync dependency.
• The tool remembers your most recent preset, theme, style, and builder values in local browser storage.
• Completion tones use the Web Audio API when the browser allows it.