25:00
Focus time
Custom:
min
Press Start to begin your study session
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A clean, distraction-free timer for study sessions. Choose Pomodoro 25/5 for general studying, Deep Work 50/10 for complex topics, or set any custom duration. No ads, no account, no popups. Start studying in one click.
Research on cognitive performance consistently shows that timed study blocks produce better retention than open-ended sessions. Three mechanisms explain this: time-boxing prevents Parkinson's Law (work expanding to fill available time, usually with low-quality activity); scheduled breaks prevent cognitive fatigue — attention quality degrades after 20–30 minutes of sustained focus without rest; and the commitment of a running timer reduces task-switching, the single biggest enemy of effective studying. A 2014 study in Cognition confirmed that brief mental diversions significantly improve sustained attention — validating the Pomodoro break structure.
Choose based on subject difficulty, your current energy level, and how far you are into the study session.
| Preset | Work / Break | Best for |
|---|---|---|
| Pomodoro 25/5 | 25 min / 5 min | General studying, homework, reading, problem sets. The most studied and widely recommended format. |
| Deep Work 50/10 | 50 min / 10 min | Complex material: maths, coding, essay writing, lab reports. Longer blocks allow deeper engagement before the break. |
| Sprint 15/5 | 15 min / 5 min | Low-energy days, starting after a long break, or revision of familiar material. Lowers the barrier to beginning. |
| 90-min block | 90 min / 20 min | Aligns with ultradian rhythms — the brain's natural 90-minute focus cycle. Best for experienced students. |
Pick a preset above. If you are unsure, start with Pomodoro 25/5. You can always switch to longer blocks once you are warmed up.
Before pressing Start, write or type exactly what you will work on. "Study chemistry" is too vague. "Complete pages 40–55 of Chapter 3" is specific and completable.
Phone face-down and silent. Close every browser tab unrelated to the task. Press Start. The running timer makes distraction visible — you see time ticking on the task you committed to.
Stand up immediately. Walk around, look out of a window, drink water. Do not check your phone during a 5-minute break — the brain needs genuine rest, not a different screen.
Mark a tally for each completed session. After one week you will know your actual productive capacity — most students discover it is far less than they assumed, but far more focused.
Use Deep Work 50/10 for problem sets — maths requires sustained thinking and each problem takes time to load into working memory. Interrupting at 25 minutes can leave you mid-problem. The 50-minute block allows full problem completion.
Pomodoro 25/5 works well for academic reading. In 25 minutes at average reading speed you cover 6,000 to 7,000 words — a complete journal article or 2 to 3 textbook pages with full comprehension.
Pomodoro or Deep Work for writing depends on your draft stage. First draft: 25 minutes of continuous writing without editing. Revision: 50 minutes for thorough structural review. Do not mix drafting and editing in the same session.
The Sprint 15/5 format works well for active recall revision — 15 minutes of retrieval practice (closing the book and writing from memory), 5 minutes checking answers. Retrieval practice is the single most effective study technique for exam performance.
25 to 50 minutes of focused study followed by a 5 to 10 minute break is the research-supported range. The Pomodoro Technique (25/5) is the most studied format. For complex material, 50-minute deep work sessions followed by 10-minute breaks preserve retention better than shorter blocks.
Yes. Time-boxing study sessions prevents Parkinson's Law — work expanding to fill available time with low-quality activity. Timed study with scheduled breaks produces better retention than open-ended sessions, supported by research on spaced practice, cognitive load, and attention restoration.
The Pomodoro 25/5 split is the most researched and works well for most students and subjects. For complex material like maths or long-form writing, the Deep Work 50/10 split allows deeper engagement. For low-energy days or starting after a long break, use Sprint 15/5 to lower the barrier to beginning.
Most students complete 6 to 10 effective Pomodoros (2.5 to 4 hours of genuine focused study) per day at peak performance. Quality of focus matters more than hours — 6 focused Pomodoros produce better results than 10 distracted ones. Track your sessions for one week to discover your actual productive capacity.
Yes. A visible countdown creates time pressure that reduces distraction and prevents the open-ended drifting common in homework sessions. Set a 25-minute timer, commit to one task, take a 5-minute break, and repeat. Even students who resist timers initially report better homework completion after one week of consistent use.
Stand up and move for at least 2 minutes. Look at something more than 6 metres away to rest your eyes. Drink water. Avoid your phone or social media — these do not provide the mental rest the brain needs and often extend well beyond 5 minutes. A short walk or stretching is ideal.
Yes. The study timer is fully responsive on mobile — iPhone, Android, tablet, and desktop are all supported. Enable browser notifications for an alert when your session ends, even if you switch to another app. Works entirely offline once the page has loaded.
The Pomodoro preset (25/5) uses shorter blocks with frequent breaks — better for subjects where you can make progress in 25 minutes and for maintaining energy through long study days. The Deep Work preset (50/10) uses longer blocks for subjects requiring deep concentration to load complex problems or ideas into working memory.