Why pay when Screen Time is free?

Screen Time limits end with one tap on “Ignore Limit”. Tenki uses the same Apple system but turns it into a commitment: a session that stays locked until you end it, a QR code or NFC tag you can keep somewhere else, strict mode, breaks and schedules.

For seven days, yes. Download Tenki, start your free week with one tap and use everything in it. If it helps, you keep it with a one-time purchase of €7.99. No subscription, no ads, and nothing is charged automatically.

What happens after the seven days?

Tenki asks you once whether it stays. If you don't buy it, you can't start new sessions, and a running session can always be ended. If you bought Tenki before it was free to download, it stays yours.

What if I really need a blocked app?

Use Short opens for a few brief opens, take a planned break, or use the limited emergency unblock.

It's your phone, so yes, if you really want to. Tenki makes quitting a decision, not a reflex: strict mode stops you deleting the app, and if your code or tag is somewhere else, ending means going to get it.

Do I need an NFC tag?

No. You can start and end in the app, or print a free QR code. NFC tags are optional and cost a few euros.

Does Tenki see which apps I block?

No. Apple gives Tenki sealed tokens instead of app names. There is no account, no analytics and no server. Everything stays on your iPhone.

Which devices are supported?

Tenki is made for iPhone with iOS 17.0 or later. Screen Time needs a device passcode.

App blocker for iPhone

Block the noise.
Keep the hour.

Tenki locks the apps and websites you choose, so the hour goes where you meant it to go. A book, revision, dinner with your family, a night's sleep. You end it when you're ready, in the app or by scanning a QR code or NFC tag.

Download on theApp Store Print a free QR code

7 days free
Then €7.99 once
No subscription
No ads
No account
Nothing leaves your iPhone

Made in Berlin by a small, independent company. Tenki collects no data at all. Privacy policy

The storm

Your phone is built to pull you back. Willpower loses that fight a hundred small times a day. So decide once what the hour is for, and let Tenki hold the line until you're done.

The hour

What is your hour for?

A bookThe one on the nightstand, a chapter at a time.
RevisionThursday's exam, one topic after the other.
DinnerThe kids at the table, and your eyes on them.
A hobbyThe guitar, the sketchbook, the bike that needs fixing.
A friendAcross the table, and you're really there.
SleepNothing lit up at one in the morning.

Tenki doesn't decide what matters. You do. It keeps everything else closed while you're there.

The session

Choose what pulls you away. Choose how it ends.

First, the apps

Pick apps, whole categories and websites in Apple's own Screen Time picker. Tenki never learns which ones: Apple hands it sealed tokens, not names.

Then, how the session runs

Until you end itRecommended	Apps stay blocked until you end the session. The simplest and most effective way.
Timer	Pick a duration. Apps unblock by themselves when time is up.
Pause by scan	Scan your code for a timed pause. Scan again during the pause to end.
Short opens	Apps stay blocked, but you can open them briefly a few times. Even per app, with your own count and length.

And what ends it

In the app
An NFC tag
A QR code

Tenki's “How your session works” screen: the four modes, with Until you end it selected, and the three ways to end it: in the app, NFC tag, QR code. — The real app. “How your session works”, set up in one screen.

Strict

Strict when you need it. Gentle when you don't.

Strict mode: While a session runs, no app can be deleted, Tenki included. The App Store is blocked too, unless you choose to keep it open for updates.
Breaks: Timed breaks with a daily limit, or none at all. Blocking comes back on its own.
Schedules: Start a profile by itself on the days and hours you choose. School nights, exam weeks, the hour before bed.
Allow only: Turn it around: block everything except the few apps and websites you want to keep.
Emergency unblock: A limited way out for real emergencies. You can switch it off.
One tap away: Live Activity on the Lock Screen, widgets, a Control Center button and Shortcuts.

A profile for weekday mornings: schedule, breaks, strict mode.

One word, two meanings

In Japanese, tenki means weather. Written another way, it means turning point. Tenki is named for both.

ten · sky

ki · air

tenki · weather 天気

The storm around you. Feeds, pings, the endless pull of one more thing. You can't switch it off.

You can't stop the storm around you,but you can set your sails.

ten · turn

ki · moment

tenki · turning point 転機

The moment you decide what your time is for. It can be one session, tonight.

Your code

Where it ends is up to you.

Link a printed QR code or an NFC tag to a profile, and the session only ends when you scan it. Keep your code or tag anywhere that works for you: another room, another floor, at work, in the car, with a friend. The further away it is, the more deliberate ending becomes.

A few places, for example

What ending takesA walk

You get up and leave the room. Somewhere on the way you often notice you don't want to stop.

Or somewhere off this map: at work, in the car, with a friend. There is no right place, only the one that works for you.

Print a free QR code How the QR code works

“The sole cause of man's unhappiness is that he does not know how to stay quietly in his room.”

Blaise Pascal, Pensées, 139 (trans. W. F. Trotter). One of the 51 quotes in Tenki.

The price

Seven days free. Then pay once.

Try everything in Tenki for seven days, free. If it helps, keep it for €7.99, once, and it never asks again. Nothing is charged automatically: when the week is over, Tenki asks once and waits for your decision.

Many free apps are paid for later: with a subscription, with your data, or with ads. None of that works here. The free week is simply a week: nothing to cancel, no account to sign up for, no server to send anything to.

Tenki never sees your data. When you pick apps to block, Apple gives Tenki sealed tokens instead of app names. Your sessions and stats stay on your iPhone. Privacy policy

Tenki · Focus & App Blocker

Download and seven days€0.00
Keep Tenki, once€7.99
Subscriptionnone
Automatic chargesnone
Adsnone
Accountnone
Trackingnone
Data collectednone

Total, once€7.99

Thank you. It's yours to keep.

Quiet

No points. No pets. No trees to kill.

Tenki doesn't compete for your attention. It keeps an honest record: a calendar of the hours you put in, your longest session, the days in a row. No score, no guilt when you take a day off.

And 51 quotes from people who fought the same storm, from Seneca to Simone Weil, each checked at the source. Star the ones that hold for you.

“Nothing, Lucilius, is ours, except time.”

Tenki's home screen: a Seneca quote, a 12-day run, 1 hour 47 minutes of focus now, the longest session of 2 hours 58 minutes, and a calendar of focus hours in shades of sand.

Dinner, a film, friends over?

Allow only what the evening needs, say the camera and your music. Everything else waits until the evening is over.

Handing your phone to a child?

Allow only the apps they may use, switch on Apple's adult-website filter, and keep your code or tag yourself. How to set it up, and where it stops.

Questions

Good to know.

Why pay when Screen Time is free?: Screen Time limits end with one tap on “Ignore Limit”. Tenki uses the same Apple system but turns it into a commitment: a session that stays locked until you end it, a QR code or NFC tag you can keep somewhere else, strict mode, breaks and schedules.
Is Tenki free?: For seven days, yes. Download Tenki, start your free week with one tap and use everything in it. If it helps, you keep it with a one-time purchase of €7.99. No subscription, no ads, and nothing is charged automatically.
What happens after the seven days?: Tenki asks you once whether it stays. If you don't buy it, you can't start new sessions, and a running session can always be ended. If you bought Tenki before it was free to download, it stays yours.
What if I really need a blocked app?: Use Short opens for a few brief opens, take a planned break, or use the limited emergency unblock.
Can I still cheat?: It's your phone, so yes, if you really want to. Tenki makes quitting a decision, not a reflex: strict mode stops you deleting the app, and if your code or tag is somewhere else, ending means going to get it.
Do I need an NFC tag?: No. You can start and end in the app, or print a free QR code. NFC tags are optional and cost a few euros.
Does Tenki see which apps I block?: No. Apple gives Tenki sealed tokens instead of app names. There is no account, no analytics and no server. Everything stays on your iPhone.
Which devices are supported?: Tenki is made for iPhone with iOS 17.0 or later. Screen Time needs a device passcode.

Make this your turning point.