White noise while working
Nature is free; water, fire, animals, city, places and transport come with Pro.
Zen
Ambient sound over any page, nothing blocked
Rain, forest, fire, city — layered into a soundscape of your own. Zen does not shut anything down; it just makes the browser a calmer place to be.
Everything you meant to do
…and the tab that ate the hour
wikipedia.org
This site is blocked
You asked to keep this one closed until 18:00.
25:00
Focus session
Distracting sites stay shut while the timer runs.
Counted on your device
Nothing about this visit left your browser.
Time to wind down
Breathe with the circle until the screen lets go.
Rain over the page
Ambient sound, nothing blocked.
Look 20 feet away
Twenty seconds. Your eyes have been at this screen for two hours.
Three things today
Written this morning, still waiting.
Today you are the Learner
Every tab is a vote for who you are becoming.
Dark, without the mess
Images keep their colours. Already-dark sites are left alone.
25 on, 5 off
The rhythm runs itself; you stop watching the clock.
Warm after sunset
The page warms up in the evening instead of glowing at you.
Two minutes
In, hold, out — follow the circle and go back to work.
NUFF.WORK
on
click the toggle — this is the real interface, not a screenshot
Sometimes you do not need to be stopped. You need the room to be quieter.
How it works
Sound without a spare tab
The usual answer is a YouTube rain video you have to keep alive. This is not that.
01
Pick your sounds
Nature is free. Water, Fire, Animals, City, Places and Transport come with Pro.
02
Mix them
Several sounds at once, each at its own level, until it sounds like the place you want to be in.
03
Keep working
Zen blocks nothing. You carry on browsing with the sound underneath.
What you get
What zen mode gives you
Seven categories
Nature free; Water, Fire, Animals, City, Places and Transport with Pro.
free
Mixable
Rain and a fireplace together, at levels you choose.
free
Breathing exercises
The same animated guide as in sleep mode, when you want to slow down for a minute.
free
Nothing is blocked
A calmer browser, not a locked one.
free
No spare tab
The player is inside the extension, so nothing gets closed by accident.
free
Common cases
What people use ambient sound for
Rain sounds without a YouTube tab
The player lives in the extension, so nothing autoplays after it and nothing gets closed by accident.
Building your own soundscape
Layer several sounds, each at its own level, until the room sounds right.
Calm without blocking anything
Zen restricts nothing. It is the soft mode on purpose.
A minute of breathing between tasks
The same animated guide as bedtime mode, available any time.
What zen mode records
How long the mode ran, stored in your browser. Sound files are streamed, so they are fetched from our server — the request carries nothing about which page you are on.
See how we compareQuestions
About Zen
Does zen mode block anything?
No. It is deliberately the soft mode: sound and breathing, no restrictions. Use Block Sites when you need something firmer.
Which sounds are free?
Nature. The other six categories are part of Pro.
Can I play several sounds at once?
Yes, and each one has its own volume, so you can build a mix.
Does the sound stop if I switch tabs?
No. It runs from the extension, not from a page, so moving between tabs does not interrupt it.
The other eleven
They work together, not instead of each other
Zen is the soft one of twelve
When soft is not enough, the same extension blocks, times and tracks — free.
Add to Chrome — free