Hard blocks · no workaround

Block apps, own your time.

For the exam you’re studying for. The evenings with your kid. The thing you keep not shipping. That’s what the phone is quietly taking, and what kadn gives back.

Download on theApp StoreGet it onGoogle Play

Also on your laptop: Mac & Windows apps block desktop distractions

kadn.14:32

Protected this week

14:20h

Goal 15:00 · on track

Social feedsL3

Rule active · until 20:00

Deep workL2

Weekdays · 9:00 to 13:00

Exam blockSealed

21 days left · can't be undone

Slide to block now

Who it's for

You're not "average screen time". You have a reason.

kadn is one tool. Which door you walk through depends on what you’re protecting.

Students

The exam

Lock the phone until exam day. Stop losing the evening, and the trust in yourself, to one “quick check”.

For students →

Parents

Be in the room

Quiet, unbreakable windows at dinner and bedtime. Be a memory of presence, not a face behind a screen.

For parents →

Builders

Ship the thing

Deep-work blocks you can’t sabotage. Stop telling yourself you’re “working” while you scroll.

For founders →

Reset

For yourself

A wall you can’t take down alone. Secular, private, kept by one person you trust. Systems beat willpower.

Get yourself back →

How kadn works

Three ways to block. One clear tool.

Core

Rules

Pick apps, choose how hard, and set when — always on, or on a schedule. This is kadn’s core: the system enforces it on-device, even when kadn is closed, and you can run as many rules as you need, each with its own apps, hardness and hours.

On demand

Block now

Need the next hours, not a schedule? One tap blocks your chosen apps for 15 minutes to 12 hours — binding after 60 seconds. Dumbphone mode flips it around: everything is blocked except your allowlist.

Daily

Daily limits

A shared minute budget of 5 to 240 minutes a day across the apps you pick. When it’s spent, they stay blocked until midnight, and the feed starts costing something you can see.

Seal & partner

Make a promise you can't take back.

Seal a rule until a date you choose, up to 90 days. Until then it can’t be softened, switched off, or deleted, and uninstalling kadn is off the table too. The one door left is a person you trust — and even your partner can only open a 15-minute window, once every 7 days, for real emergencies.

Sealed until a date

Uninstall protection

Only your partner opens

Why people reach for this

The problem, in their own words.

“I’m not smart enough. And I know in reality I do know everything.”

Exam candidate · research

“This is my children’s childhood, and I’m spending it aimlessly scrolling.”

Parent · research

“Please make it so it can’t be uninstalled. I’d pay five times the amount.”

Reset · research

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

Own your time

Set one rule tonight.

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

Download on theApp StoreGet it onGoogle Play

Also for Mac & Windows