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Pomodoro 25/5
The classic 25-minute sprint and 5-minute recovery cadence for sustainable daily focus.
Focus & Productivity
Focus on the clock.
A distraction-free productivity engine for deep work, study sessions, exam prep and ADHD time management. Visual dial, synthesised chimes, zero popups.
- Screen Wake Lock
- Dial or visual pie
- Works offline
- No accounts
Focus 25:00 Round 1 / 4
25m focus · 5m breakSustained high-tempo micro-bursts
Demo runs at accelerated speed (1 second = 5 minutes).
1
Select your cadence
Pomodoro 25/5, Deep Work 50/10, Exam 60m or Sprint 15m from the preset bar.
2
Pick a display
Precision Chronograph Dial or high-contrast Visual Pie.
3
Choose your alerts
Desk chimes, exam gongs, metronome ticks — or silent exam-hall mode.
4
Go hands-free
Space to start/pause, R to reset, F for fullscreen, 1–4 to switch cadences.
Choose your cadence
Pick a timer
Deep Flow
Deep Work 50/10
Extended 50-minute immersion blocks for complex engineering, writing and research.
Quick Start
Sprint 15m
High-intensity 15-minute countdown with a visual pie for rapid task initiation.
High Stakes
Exam Simulator 60m
Authentic test clock with automated 15-minute and 5-minute warning chimes.
Fully Configurable
Custom Focus Timer
Personalised work-to-rest cadences and custom cycle counts for unique workflows.
Quick guide
Which protocol for your task?
| Cadence | Work : Break | Cognitive state | Best for | |
|---|---|---|---|---|
| Classic Pomodoro | 25m Work / 5m Break (4 cycles) | Sustained high-tempo micro-bursts | Writing, inbox triage, coding bugfixes, student revision | Start → |
| Deep Work 50/10 | 50m Work / 10m Break | Undivided flow-state immersion | Software architecture, thesis writing, mathematical proofs | Start → |
| Quick Sprint | 15m unsegmented countdown | Visuospatial urgency & ADHD pacing | Classrooms, speed drills, standups, chore sprints | Start → |
| Exam Hall | 60m continuous (15m / 5m warnings) | High-stakes pacing & stamina | Mock exams, SAT/ACT, bar prep, competitive tests | Start → |
| Custom | Your own work / break / cycles | Matched to your attention span | Any workflow — from 20/5 to 90/20 | Start → |
Why it works
Externalise time, protect attention.
Research by Dr. Gloria Mark at UC Irvine found it takes an average of 23 minutes and 15 seconds to return to deep focus after an interruption. Anchoring work to a rigid visual timer sets a clear boundary: during the sprint, other inputs wait. oTimers runs purely in your browser with no tracking cookies and no popups, timing on performance.now(), and every chime is synthesised in real time.
- Precise timingHigh-precision hardware clock
- Wake LockScreen never dims mid-session
- Zero trackingNo cookies, no popups
- OfflineWorks anywhere
FAQs
Questions, answered
What is the difference between Pomodoro (25/5) and Deep Work (50/10)?
Pomodoro (25 minutes) suits tasks needing frequent restarts and high intensity, minimising task-initiation friction. 50/10 is tailored for deep cognitive immersion such as coding, research or creative writing, where entering flow takes 10 to 15 minutes and frequent 25-minute breaks are counterproductive.
How does a visual timer help with ADHD?
People with ADHD often struggle with “time blindness” — difficulty perceiving time without concrete external cues. A visual timer turns minutes into a shrinking shape (a dial sweep or pie slice), giving an immediate cue of remaining time.
Can I customise the focus and break intervals?
Yes. Use the Custom timer to set your own work duration, break length and cycle count. Settings are saved in your browser's local storage.
Will the screen stay awake while a timer runs?
Yes. oTimers uses the browser's native Screen Wake Lock API, so your display stays on while a timer is running — ideal for desk monitors, exam halls and classroom smartboards.