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Free • Zero-Login • Procedural Audio

50/10 Pomodoro Timer

Free online 50/10 Pomodoro timer with ambient soundscape, drift-free accuracy, and a workday finish-time estimate. No signup, no ads, works offline.

Session #1
25:00
🎯Deep focus on core project milestone
Single-Focus Task Engine

Current Intentions

⚡2 Pomodoros Left • Finish at 5:45 PM (1h 05m)
Est:
Flow Guard • Quick CapturePark thought & return to flow
Acoustic Engineering

16-Channel Procedural Soundscape

Pure Web Audio API synthesis. 0MB streaming, infinite variation, no looping seam clicks.

Deep Brown Noisenoise

1/f² warm low-frequency acoustic blanket for deep focus

Volume60%
Balanced Pink Noisenoise

1/f balanced spectral density for steady cognitive flow

Volume50%
Pure White Noisenoise

Equal energy per frequency masking sudden office noises

Volume40%
Gentle Rainnature

Calming stochastic Poisson raindrops with soft roof patter

Volume65%
Distant Thundernature

Deep resonant low-frequency acoustic rumbles every 20-30s

Volume45%
Ocean Wavesnature

Rhythmic 8.3s tidal swell for slow breathing and mental reset

Volume55%
Cozy Campfirenature

Soothing wood embers with random Poisson acoustic crackles

Volume50%
Forest Birds & Windnature

Gentle canopy wind gusts with intermittent morning birdsong

Volume40%
Night Cricketsnature

4.7kHz triple-pulse acoustic crickets in a peaceful meadow

Volume35%
Cozy Coffeehouseambience

Warm cafe background murmur with subtle ceramic cup clinks

Volume45%
Library Whispersambience

Quiet book page turns and gentle paper rustling

Volume40%
Mechanical Keyboardambience

Satisfying tactile typing rhythm at 75 WPM flow tempo

Volume45%
Night Train Rideambience

Hypnotic rhythmic rail cadence and distant track vibrations

Volume50%
Wind Chimesambience

Gentle pentatonic metallic chimes stirred by a light breeze

Volume35%
40Hz Gamma Wavesbinaural

Auditory olivary binaural beat for peak memory & coding speed

Volume40%
10Hz Alpha Wavesbinaural

Binaural flow frequency inducing relaxed yet acute alertness

Volume40%
Soundscape Preset

Save Current Mix

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What the 50/10 method is

The classic Pomodoro runs 25 minutes of focus followed by 5 minutes of break. The 50/10 variant doubles the block: 50 minutes deep, 10 minutes off. It’s the favorite of programmers, grad students, and anyone doing work that takes a long time to load into working memory — 25 minutes can end just as the code finally makes sense.

50/10 fits when:

  • Your task has a long warm-up (big codebases, dense papers, long-form writing)
  • You find 25-minute sessions interruptive — you’re just getting going when the bell rings
  • You can protect a full hour; 50/10 uses blocks of exactly one hour including the break

Stick with 25/5 when: you’re starting a new habit, the work is unpleasant (shorter commitments are easier to begin), or your environment is interrupt-prone.

Why this timer’s accuracy matters at 50 minutes

Most web timers are a setInterval loop. Browser tab throttling — Chrome Energy Saver, Safari App Nap — can slow those ticks to one per minute or worse when the tab goes background. Over a 50-minute session, a naive timer can drift by minutes.

This timer runs its clock in a dedicated Web Worker on a separate OS thread, measuring elapsed time with the monotonic performance.now() clock instead of counting ticks. Background the tab, lock your screen, come back in an hour — the countdown is exactly where wall-clock time says it should be.

How to use this page

  • Timer pre-set to 50 minutes — the mode tabs above let you switch to 25/5, long breaks, or Animedoro (50/20) anytime
  • Brown Noise (50%) + Rain (35%) — a neutral deep-work bed for long stretches; adjust freely
  • Workday ETA — add tasks with pomodoro estimates in the task panel, and the timer shows the exact clock time you’ll finish everything

Press Space to start your first block.

FAQ

Is 50/10 or 25/5 better?

Neither is universally better — they suit different work. 25/5 gives more frequent recovery and lower commitment friction; 50/10 rewards work that rewards immersion. Try each for a week and watch your session history here: the stats modal tracks completed pomodoros per day, so you’ll see which schedule you actually keep.

Does the long-break rule still apply with 50/10?

Yes. Take a longer 20–30 minute break every 2–3 blocks (every 4 hours of work). With 50-minute blocks, two blocks plus a long break makes a natural morning and afternoon.

Can I change the durations?

All of them — open Settings (gear icon) to set any focus, short break, long break, and long-break interval you want. Custom intervals like 52/17 or 90/20 work identically.

Local Focus Analytics

Your Focus Journey

Daily Streak
1🔥
Consecutive days active
Focus Today
0m⏱️
Deep focus minutes logged
Pomos Completed
0🎯
Finished focus sessions
Best Focus Hour
—
Your sharpest time of day
This Week vs Last
—
0m this week
Avg Session
—
0 sessions in 28 days
Focus Quality
—
Today's Focus Timeline0 sessions
Chronological flow log
Today's Interruption Audit0 logged
Diagnose what breaks your focus
Focus Garden0 plants grown
Focus Activity HeatmapLast 28 Days
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Preferences

Timer & Audio Settings

End-of-Session ChimeSynthesizes a pure harmonic bell tone when timer completes
Pure procedural synthesis — zero audio files
Daily target
8
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Language

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Command Palette

Keyboard Shortcuts

Timer Controls
Start or Pause timerSpace
Reset current sessionR
Skip to next cycleS
Toggle Digital / Pie displayP
Audio & Presets
Mute / Unmute all soundscapesM
Curated presets
1–6
Focus & Flow
Toggle Fullscreen Zen HUDZ
Park intrusive thought (Flow Guard)D
Focus task input boxT
Show / Hide shortcuts?
Close dialog / Exit Zen modeEsc

Add to Home Screen

Install PomodoroSounds on your iPhone or iPad for fullscreen deep work and offline procedural audio:

  1. 1Tap the Share button in Safari's bottom toolbar.
  2. 2Scroll down the share sheet and tap Add to Home Screen.
  3. 3Tap Add in the top right corner. The app will launch like a native application!

Install PomodoroSounds

Run PomodoroSounds as a native, lightweight window on your desktop with zero distractions:

  1. 1Chrome / Edge / Brave: Click the Install icon in the address bar.
  2. 2Safari (macOS): Click File in the top menu bar > Add to Dock.
  3. 3Enjoy instant offline startup, keyboard shortcuts, and zero browser tab clutter.