Free Online Timer
The Pomodoro timer online that tells you the truth
Most online Pomodoro timers just count down 25 minutes and trust you to behave. TimerDuel runs a chess-clock — focus and break share one session, and you tap to switch the moment you drift. The result: a real focus rate, not a fantasy.
Why most online Pomodoro timers lie a little
A countdown can't see you. It marks a 25-minute block as "complete" whether you focused for 25 minutes or for 6 minutes between Slack pings. Your stats reward intent, not behavior. The chess-clock approach fixes that: every second you're not focused belongs to break, and the final percentage doesn't flatter you.
How to use it
- Open timerduel.com.
- Hit Start — the focus side begins counting.
- The instant you check your phone or open a new tab, tap Break. The break side starts; focus stops.
- When you're back, tap Focus. Repeat as needed.
- At the end, read your focus rate. That number is the only one that matters.
Free, no signup, browser-based
- • 100% free, no ads, no upsell.
- • No account, no email, no install.
- • Works on laptop, tablet, and phone.
- • Keeps running when the tab is in the background.
FAQ
Is this Pomodoro timer free?
Yes. TimerDuel is a free online Pomodoro-style timer. No signup, no install, no ads. Just open timerduel.com in any browser.
Does the online timer work without an account?
Yes. You can start a focus session in one click — no email, no login. Your session runs entirely in your browser.
How is this different from a normal online Pomodoro timer?
Classic online Pomodoro timers count down a fixed 25 minutes. TimerDuel runs a chess-clock: focus and break share one session and you tap to switch. At the end you see your real focus rate as a percentage.
Will it keep running if I switch tabs?
Yes. The timer is browser-based and keeps counting even when the tab is in the background.
Can I use it on my phone?
Yes. It works in any mobile browser. For deeper focus, study on a laptop and keep your phone in another room.
Start a focus session now
Opens instantly. No signup, no install.
Open TimerDuel