The timer above does one thing: it counts 25 minutes, alerts you, counts 5 of break, alerts you again. That is deliberately little. The pomodoro technique works precisely because it asks nothing beyond pressing a button and accepting that the block has an end.
What is the pomodoro technique?
It is a method created by Francesco Cirillo in the late 1980s, when he was a student using a tomato-shaped kitchen timer (pomodoro, in Italian). The rule: one task, 25 minutes without interruption, a 5-minute break. After every four blocks, a long break of 15 to 30 minutes.
The least-known part of the method is the one that matters most: a pomodoro is indivisible. If you interrupt it, the block does not count. The idea is to treat the 25 minutes as an appointment with an end time, not as "I'll work until I'm tired", which is the recipe for never starting.
How do I use the online pomodoro timer?
Pick a single task, press start and work until the alert. On the break, get out of your chair. After four blocks, take the long break. The lengths are adjustable in the timer settings; the default is 25:00 of focus and 5:00 of break, and you can change both before you begin.
- Write down the task for this block. Just one, and concrete: "answer the client's three emails", not "emails".
- Start the timer and move your phone out of sight. The alert comes from the page; you don't need to watch the clock.
- If something pops into your head, jot it down and go back. The new to-do goes on the list, not into the block.
- When it rings, stop. Even mid-sentence. Note where you left off; picking back up gets easier.
- On the break, leave the screen. Water, window, a stretch. Scrolling the feed is not a break; it is another task.
- After four blocks, long break. And count how many pomodoros the task took: it is the best estimate you will ever have for next time.
Does pomodoro actually work? What the research says
It works for sustaining attention across a session, and the research backs the breaks more than the number 25. A study with students compared fixed, pomodoro-style breaks with breaks taken whenever the person felt like it: the fixed-break group learned the same amount in less time and finished less tired (Biwer et al., 2023).
Another study, from 2011, showed that attention on a continuous 40-minute task decays predictably, and that brief interruptions along the way are enough to prevent the decline (Ariga & Lleras, 2011). That is the mechanism pomodoro uses.
Why 25 minutes, and what if it doesn't work?
The 25 minutes have no scientific basis; it is what worked for Cirillo. What the technique offers is a block short enough to start and an end you can see. If 25 feels like forever, use 10. If it feels like nothing, use 45. The timer exists to serve the task.
The problem that remains
The timer solves "how long do I focus". It does not solve "remembering to use the timer" or "what comes after the block", and that is the part that made me build ASB. Sofia lives on WhatsApp: you tell her what you need to do, she turns it into a task with a deadline and calls at the right time, insisting until it is done. The button below sends this block's task to her.
Frequently asked questions
What is the pomodoro technique?
A time-management method created by Francesco Cirillo in the late 1980s: pick one task, work on it for 25 minutes without interruption, take a 5-minute break, and after every four blocks take a longer break of 15 to 30 minutes. The name comes from the tomato-shaped kitchen timer he used.
Do I need to install anything or create an account?
No. The timer runs in your browser, no sign-up. Leave the tab open and it alerts you when the block ends. If the browser asks for permission to notify you, allowing it helps you hear the alert while the tab is in the background.
Can I change the 25 minutes?
Yes, and you should if 25 does not work for you. Both the focus and break lengths are adjustable. People who struggle to start usually do better with 10- or 15-minute blocks; people who slip into hyperfocus may prefer 45 with 10-minute breaks.
Does pomodoro work for ADHD?
For many people, yes, for two reasons: the timer makes time visible, which compensates for not feeling it pass, and the promise of stopping in 25 minutes lowers the barrier to starting. There is no study specifically on pomodoro in ADHD; what exists is evidence that short, scheduled breaks help sustain attention.
What if the timer goes off in the middle of something important?
Cirillo says stop anyway. In practice, if you are doing well, note where you stopped and take the break; coming back is easier than it seems. If stopping always hurts, make the block longer. The timer works for you, not the other way around.
Sources
- Cirillo, F. The Pomodoro Technique (book and official site)
- Biwer, F. et al. (2023). Understanding effort regulation: Comparing "Pomodoro" breaks and self-regulated breaks, British Journal of Educational Psychology
- Ariga, A. & Lleras, A. (2011). Brief and rare mental "breaks" keep you focused, Cognition