What is KnockKnock!?

KnockKnock! is a Mac-native video calling app designed for quick, spontaneous conversations with your closest circles. Instead of scheduling meetings, sharing links, or sitting through waiting rooms, you get a one-click call that opens in a floating window — no full-screen takeover, no friction. Built on LiveKit for low-latency streaming and Firebase for secure sign-in, it keeps every interaction lightweight, private, and focused. Each call is capped at 5 minutes, encouraging brief, meaningful check-ins rather than long, draining sessions.

Who it's for

• Remote teammates — who want a fast, distraction-free way to ask a quick question or share a thought without booking a meeting.
• Close friends — who prefer spontaneous, face-to-face chats over texting but don't want the formality of a full video call.
• Family members — who need a simple, reliable way to connect across distances without navigating complex apps or login screens.

Key features

One-click calling

No meeting links, no dial-in codes, no waiting rooms. Just tap a contact and you're connected instantly. The call opens in a floating window that stays on top of your other apps, so you can keep working or browsing while you talk.

5-minute call limit

Every conversation is intentionally brief — five minutes max. This keeps interactions spontaneous and focused, perfect for quick updates, hellos, or check-ins. No more hour-long calls that drain your energy.

Customizable themes and colours

Personalize your call interface with adjustable colours and themes. Whether you prefer a dark, minimal look or something bright and playful, KnockKnock! lets you match the vibe to your mood or brand.

Secure Firebase sign-in

Your account is protected by Firebase authentication, ensuring that only invited members of your trusted circle can join. No public profiles, no unsolicited calls — just private, secure connections.

What stands out

"KnockKnock! turns video calling into a tap — not a meeting."

Most video apps are built for long, scheduled sessions with large groups. KnockKnock! flips that by prioritizing speed, spontaneity, and intimacy. The floating window means you never lose context — you can glance at a colleague while coding or catch up with a friend while cooking. The 5-minute limit isn't a restriction; it's a feature that respects your time and encourages genuine, focused interaction. Combined with customizable aesthetics and secure sign-in, it's a refreshing alternative to bloated conferencing tools.

Worth checking out if…

You value quick, meaningful connections over long, scheduled calls. If you're tired of meeting links, waiting rooms, and apps that hijack your entire screen, KnockKnock! offers a lightweight, Mac-native alternative that fits naturally into your workflow. It's ideal for small teams, close friends, or family who want to stay in touch without the overhead of traditional video platforms.