App & website blocker for Mac

Block apps & websites on your Mac.

The Mac is the productivity machine with YouTube built in. kadn is the focus app for macOS that doesn’t ask nicely: real blocks on apps and websites, a menu-bar presence, and rules that survive your weakest moment.

macOS · also on iPhone, Android & Windows

The honest part

Focus apps that ask politely don't survive a deadline.

The Mac ecosystem is full of gentle tools. Gentle is the problem. Coming from SelfControl or Freedom? You’ll recognize the gaps — and where kadn closes them.

Self-unblock

The timer you outwait

Classic Mac blockers lock you out for a session — then it ends, and the tab is right there. A block with no consequence after it expires trains patience, not focus.

Extensions

One browser of many

Safari extension on, Chrome wide open. Website blocking that lives inside one browser only blocks one of your doors.

Screen Time

Easy to ignore on a bigger screen

Apple’s limits sync to the Mac — along with the same one-click bypass. The “Ignore Limit” button doesn’t get stricter on a bigger screen.

How kadn holds

Three levels, from a pause to a sealed wall.

kadn blocks desktop apps and websites in every browser on your Mac, from the menu bar — with the same asymmetry as on your phone: tightening is instant, loosening waits.

Brakethe only level that always lets you through, by design

“Open anyway” starts a real, enforced 15-second pause, then the app opens for 5 minutes.

Code

Type a 16-character code by hand. No pasting, and a screenshot creates a new code. Getting in costs real effort, every time.

Blockeddoesn't negotiate

No self-serve way in. Your accountability partner can open one 15-minute window, at most once every 7 days — enforced on our server.

Seal your deep-work rule for the quarter. Until the date you chose it can’t be softened, switched off, or deleted.

Every screen

Your Mac and your iPhone, one quiet.

One account, the same rules everywhere. Start a Block now on the Mac and your phone can join the same session.

Or run a pact across both — and with the people you work or study with.

This Mac · Focus block

YouTubeBlocked

X / TwitterBlocked

RedditBlocked

Same rule as iPhoneuntil 13:00

Every method, honestly

What holds on a Mac — and what doesn't.

Session blockers — strict until the timer ends

rules persist, sealed up to 90 days

Browser extensions — one browser, one door

apps and websites, system-wide

Screen Time — synced limits, synced bypass

no ignore button on L2 and L3

Hiding the dock icon — out of sight, one click back

friction that doesn’t rely on hiding

In their words

The problem, in their own words.

“Shipping daily commits and still avoiding the thing that actually moves the needle.”

Founder

“Freedom to quit.”

The dream underneath the focus

“Systems beat willpower.”

The whole idea

Voice-of-customer from published forums and surveys, not paid testimonials.

FAQ

Good to know.

Is kadn like SelfControl or Freedom?

Closest honest answer: SelfControl’s hardness, Freedom’s cross-device reach, plus what neither has — a human accountability partner as the only override, and seals with an end date.

Can it block apps AND websites?

Yes, both, with one set of rules: desktop apps like games or Slack, and websites in every browser on your Mac.

Can I block YouTube on my Mac but keep it on my phone?

Yes — rules are per-device or shared, your choice. Many people run a hard Mac rule for work hours and a softer phone rule for evenings.

Does the block sync with my iPhone?

One account, same rules everywhere. Start a Block now on the Mac and your phone can join the same session — or run a pact across both.

Own your time

Your Mac. Your rules. Kept.

Two minutes to set up, free for 7 days. The evening already looks different.

For founders · See every feature · For students