Chrome extension · twelve modes

Your screen time,
counted on your side.

Block what pulls you away, focus with sound, rest your eyes, and see exactly where the hours went — without a single one of them leaving your computer.

00:00 you have been on this page
0 requests we sent about it
9 modes, one extension
Everything you meant to do
…and the tab that ate the hour
nuff.work

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.

click any mode — this is the real interface, not a screenshot

What we know about you

Nothing. And you can check that right now.

Open DevTools on this page and look at the Network tab. We have not sent a single request about your visit — because there is nothing on our side to send.

Network · nuff.work
0 requests No calls to any server for the whole time you have been reading this page
Your history lives in your browser The extension writes your statistics to local storage on your device. Syncing is optional and off by default.
Works without an account Install it and use it. No email, no sign-up, no Google login.
Your own history, free forever No “last 3 months only, upgrade for the rest”. Export everything to a file whenever you want.
We record the domain, not the page “youtube.com” and how many minutes. Never the addresses of individual pages, never their contents.
Comparison

What each extension declared about your data

This is not our opinion. It is the “Privacy practices” section of each Chrome Web Store listing, where the developer declares what they collect. Checked on 20 August 2026.

Extension
Declared data collection
Users
NUFF.WORKthis is us
No web history collected — statistics stay on your device
StayFocusdSensor Tower
Web history · user activity · website content The activity list reads, verbatim: “network monitoring, clicks, mouse position, scroll, or keystroke logging”
700 000
BlockSiteblocksite.co
Web history “The list of web pages a user has visited, as well as associated data such as page title and time of visit”
1 000 000
Momentummomentumdash.com
Personally identifiable information · authentication information Name, address, email, plus passwords and security questions
2 000 000
Forestforestapp.cc
Collects no data Fair and earned — but it is a timer, with no blocking and no statistics
1 000 000
Dark Readerdarkreader.org
Collects no data A model citizen — but it only does dark mode
6 000 000

Taken from the “Privacy practices” section of each Chrome Web Store listing and from the developers’ own privacy policies, as of 20 August 2026. A Store declaration is a statement by the developer, not the result of an audit by Google. Wording may have changed after that date.

The maths

Paying for these separately costs about $45 a month

People rarely buy all of them at once — but each of these is what you reach for when one of the twelve things is missing. Prices below are the ones published on their own sites.

What you need
What people use
Their price
Blocking sites
Freedom freedom.to, published monthly price
$8.99 / mo
Screen time tracking
RescueTime rescuetime.com, Solo plan billed monthly
$12 / mo
Focus music
Brain.fm brain.fm, monthly plan
$14.99 / mo
Ambient soundscapes
Noisli noisli.com, Pro billed yearly
€8 / mo
Dark theme everywhere
Dark Reader free and donation-funded — genuinely, and they collect no data either
$0
Eye break reminders
Eye Saver and similar usually free, with ads or a paid tier
$0
Bedtime wind-down
no browser extension does this properly — it lives in phone apps
Daily tasks
Todoist and similar free tier is usually enough
$0
Habit system
affirmation extensions exist, but the largest has a few hundred users
Pomodoro cycles
Pomofocus and similar free tier is usually enough
$0
Blue light filter
f.lux, system night light free, but system-wide — it warms the photo you are editing too
$0
Breathing exercises
phone apps — which means reaching for the other screen mid-work
NUFF.WORKall twelve, one extension
Everything above, plus statistics that stay on your device
$5.75 / mo
If you paid for each one

≈ $44 $5.75 a month, billed yearly

That is roughly $459 a year saved against buying the paid ones separately — and three of the twelve have no browser equivalent at all: the bedtime wind-down, the habit system and breathing exercises all live in phone apps.

Prices taken from each company’s own pricing page on 20 August 2026 and shown as published: Freedom and Brain.fm monthly, RescueTime Solo monthly, Noisli Pro billed yearly in euros. Companies change prices; check theirs before deciding. Dark Reader is free and funded by donations — we are not claiming to replace paying for it, only to save you the extra extension.

Pricing

The free plan is not a demo

All twelve modes, blocking on every site, unlimited tasks and your entire history — without paying and without an account.

Free

Forever, no card, no sign-up

$0
  • All twelve modes
  • Block every site at once, scheduled and permanent
  • Full statistics and history, forever
  • All 16 eye exercises and the 20-20-20 timer
  • Password protection against your own impulse
Add to Chrome

Pro

When the free plan stops being enough

$5.75 / month

billed $69 once a year — you save 42%

  • All six music genres and seven sound categories
  • Advanced eye exercises and all breathing techniques
  • All eight Shift archetypes, plus your own
  • Dark mode scheduling and per-site rules
  • Optional sync across your devices
Get PRO

Cancel any time. Not for you? Full refund within 14 days.

Questions

The ones people actually ask

Still unsure about something? Write to us — a person answers.

Do you see which sites I visit?

No. Your browsing statistics are written to storage inside your own browser and stay there. The extension works with no account at all, and in that state it makes no requests to our servers — you can verify this yourself in the Network tab of DevTools. We record the domain and the number of minutes, never the address of an individual page and never its contents.

Is the free plan crippled?

No. All twelve modes are free, blocking works on every site at once with password protection, tasks are unlimited, and your whole history is available forever. Pro adds more music genres, more sounds, advanced eye exercises, custom Shift archetypes, dark mode scheduling and optional sync.

How is this different from BlockSite or StayFocusd?

Two things. First, what the free plan covers: blocking works on every site at once, not on a capped list. Second, and more important, what leaves your computer. In their own Chrome Web Store listings, those extensions declare collection of web history — and in one case also user activity including keystroke logging and website content. We declare no web history collection, because there is none.

What if PRO is not for me?

Write to us within 14 days and we refund in full, no questions asked. There is no trial period because the free plan is not a demo — it already includes all twelve modes, blocking on every site and your entire history. PRO adds the extras on top, and if those extras turn out not to be worth it to you, you get your money back.

Can I get my data out?

Yes, at any moment, into a file — no subscription required. It is your history; charging you to look at your own past is exactly the practice we built this against.

Does blocking actually hold, or can I click it away?

You can set a password, and then weakening a rule requires it. The block overlay is also protected against pages that try to hide it with their own styles — a site cannot simply make the overlay transparent to get itself unblocked.

Does it work offline?

Yes. Blocking, tracking, tasks, dark mode and eye exercises all run locally. Only the music and ambient sound libraries need a connection.

Stop losing time you didn’t mean to spend

Twelve modes, blocking on every site and your full history — free, and none of it on our servers.

Add to Chrome — free