a tiny Mac app · $9 once
Stop getting ignored.
You sent the Slack. The email. The DM. They're heads-down and didn't even notice — for hours. Knock takes over their Mac screen and shakes your message until they look.
Your message, dead-center on their screen. Impossible to miss.
$9 once · no subscription · macOS 14+
Your message is sitting there. Unread.
Slack pings get muted. Emails pile up. DMs get “seen” and forgotten. When something actually matters — a blocker, a deadline, a quick yes/no — hoping they glance at it isn't a plan.
Knock makes sure they see it. It takes over their screen.
Connect
Share your code with your team, partner or friend. One tap and they're reachable.
Type & Knock
From your menu bar, write a line and hit Knock. You never left your work.
It takes over their screen
Your message lands dead-center on their Mac and shakes — above whatever they're doing — pulling them right back to you.
For anyone who keeps getting left on read
Not every message is urgent — Knock also does quiet live notes, doodles, and time-capsule messages that open later. But the screen-takeover is why you'll keep it.
$9. Once. Forever.
No subscription. No trial games. Pay $9 one time and unlock Knock for your whole circle — up to 5 people. One purchase covers everyone you invite.
- ✓ Screen-takeover Knock
- ✓ Live notes, doodles & time capsules
- ✓ Your whole circle, up to 5 people
- ✓ Pay once — no subscription
macOS 14+ · download & unlock in the app.
Prefer to pay first? Buy now — $9
Quit being left on read.
$9 once. Get their attention the moment it matters.
Or get notified about updates: