One person, on your Home Screen.
Knock puts one person on your Home Screen. Tap their face and their phone buzzes. No message to write, nothing to keep up with.
Léa
free · 9:14pm there
Tap Léa's face.
That's it. That's the whole app.
This is where Knock lives. Not in an app you remember to open, but among the apps you already do.
How it works
Three taps to set up. One tap after that.
Pair with one person
You scan their code, they scan yours. Both of you have to say yes, so nobody can add you to anything.
Put them on your Home Screen
A widget with their face. It shows whether they're free, and what time it is where they are.
Tap when you think of them
Their phone buzzes once, and their widget lights up in your colour for ten minutes.
On the other end
And on her phone
Fifteen minutes of words
One kind of notification, and only one: someone thought of you. Press and hold it to send a few words back; they live for fifteen minutes, then leave. No reminders, no announcements, nothing asking you to come back.
Hold it
A longer knock says more, not louder.
thinking of you
Press and hold.
Keep your finger down and watch the words change. Whichever one you stop on is the one that arrives on their phone, and their widget stays lit for longer, in a deeper colour. Their phone still buzzes exactly once, however long you hold. Nothing here can be used to insist.
Behind their face
Leave something, for a day
Léa
Try it: draw, or tap an emoji and scatter a few.
Pick an emoji or draw with your finger, and it appears behind their face, in the app and on their Home Screen. It fades after twenty-four hours and is then deleted from both phones. There is no album, no history, and no way to see an old one.
What it can do
A little more, and none of it louder.
A note that waits
Send a note for 5, 15 or 30 minutes, or choose “When seen” to let it wait until your person sees it.
View-once photo
Take a photo in Knock and add a caption or draw on it. Sending is part of Knock Pro. Your person can open it once for free. You can withdraw it before they open it when both of you are up to date.
Signature Knock
Choose up to two emoji and an effect with Knock Pro. Your person sees your signature when you knock.
Your own status
With Knock Pro, set a status with an emoji and a short message. It can stay up for up to two hours.
Knock from Apple Watch
With Knock Pro, pick a paired person on your watch to send a knock through your iPhone when it’s reachable.
A photo behind their face
Put a picture from your camera roll behind their face, in the app and on the widget. It fades after a day, like an emoji or a drawing. Part of Knock Pro.
Days together, and days in a row
The label counts every day you both showed up, and it only ever grows. Under it, the days in a row, forgiving of time zones: a knock at midnight in Paris meets the answer at dawn in Tokyo.
Busy without saying so
After an hour with nothing knocked and nothing opened, your people see you as busy. It clears the moment you open Knock, and never over a status you chose. Busy also sits in Control Center, and it can be your Action button.
The knock clock
A small dial of the hours at which the two of you knock, each in your own local time. Counts only, never times or dates.
Open to a call?
When you have both knocked within the last half hour, Knock asks. Two yeses, and one tap opens FaceTime.
One note back
A note that expired while you were away shows the hour it left. One tap brings it back for a quarter of an hour. Once a day, twice with Pro.
Knock Pro
Up to eight people, every emoji, a shelf of your own stickers, a photo behind their face, the app icon in your colour, a broken run brought back once a month, and a second note back each day. One payment, no subscription.
Why it stays small
Nothing piles up
No inbox, no feed, no history to scroll. A knock happens and it's gone, and a few words fade after fifteen minutes. The only thing kept is how many days you've both shown up.
Quiet by default
Set your quiet hours. A knock inside them arrives silently, and your people see you as asleep until they end. Their face still lights up on your widget, waiting for when you look.
Encrypted end to end
Faces, names and knocks are scrambled on your phone with a key only you and your person hold. Nobody else can read them, not even us. Nobody can add you unless you say yes, and there's no directory, no suggestions and no way to be found. The only way in is a code someone hands you.
What Knock will never be
Your paired content is end-to-end encrypted. Safety reports contain readable names and information you choose to include. Knock also stores limited account activity, app version and language data. No ads or cross-app tracking.
Price
What it costs
Free for one person, with everything that matters. €6.99, paid once, for up to eight people, every emoji, your own stickers, a photo behind their face, the app icon in your colour, a streak brought back once a month, and a second note back each day.