KnockKnock! is built for small, trusted circles: teammates, friends, and family. No meeting links, no waiting rooms — just quick, direct calls that don't take up your whole screen. Mac-native one-click video calling with LiveKit low-latency streaming, secure Firebase sign-in, and customizable colours and themes. Floating call windows and 5-minute limits make every interaction spontaneous, focused, and fun — perfect for quick, meaningful connections anytime.
Hey Product Hunt 👋
I’m Ham (@HamKarami) and for the past 12 months I’ve been building KnockKnock on evenings and weekends. Developers quoted me over $50K to build something like this, but with ChatGPT and a lot of vibecoding (being a prompt mule hurts), I was able to prototype, iterate, and actually ship it myself. I did do a code audit with some "real" human developers to get it ready for prod, so no denying that!
What it is:
KnockKnock is a free video-calling app for close friends and even closer colleagues. It’s not Zoom, it’s not Meet, and it’s definitely not another meeting tool. It’s about creating tiny, intentional moments of connection — especially for high-performing teams or tight-knit groups of friends who don’t want to get sucked into long calls.
The rules are simple:
Strictly 5-minute video calls (you can’t go longer)
A clean, non-intrusive UI that gets out of your way
Smart handling of calls behind the scenes (built with Firebase + LiveKit, plus custom logic to handle permissions, call teardown, retries, etc.)
And today I’m most excited to launch Themes — customizable backlight rings and images around your video that make every call feel personal. For the old folks in the room, if you remember windows media players custom skins, I get mad nostalgia vibes from the UI experience in KnockKnock.
Theming was a big lift technically for me, but the result feels delightful. Every time I demo it to a friend, I always look for their smile and it never lets me down. Its about time someone built something like this and I feel like it has been missing from my life for too long.
Anyways, I hope you enjoy it as much as I do. Going forward, I will be looking to add a Theme store with even more drip. I will work with an animation company to build some pretty cool ones that I have in mind. Who knows maybe even license a few with some movies and brands that I like.
Looking forward to your feedback!
Wow, KnockKnock! This is so cool! The 5-minute limit is genius for focused check-ins. Im curious, how well does it handle low-bandwidth situations on mobile hotspots?
KnockKnock! is such a cool idea! I love the spontaneous 5-minute limit. How do you handle notifications when the other person is in Do Not Disturb mode?
I loved it ever since I started beta testing it. It has come a long way since and getting better and better every update. Ham has been passionately working on Knock Knock for while and I am glad to see the grand opening too. Way to go 🥳🚀
Reminds me of Around and Multi/Remotion. I’m fine with opinionated software but I’d consider not forcing five and five.
Love the 5‑min hard stop. My calls always balloon. The door knock + tiny floating circle feels cozy, not meeting-y. Themes give me WMP skin flashbacks lol. Mac-only is a bummer for my PC at home, but I'll try it on the work Mac. Feels right.
About KnockKnock! on Product Hunt
“Minimal circular video calls that start with a "door" knock”
KnockKnock! launched on Product Hunt on December 19th, 2025 and earned 190 upvotes and 23 comments, placing #4 on the daily leaderboard. KnockKnock! is built for small, trusted circles: teammates, friends, and family. No meeting links, no waiting rooms — just quick, direct calls that don't take up your whole screen. Mac-native one-click video calling with LiveKit low-latency streaming, secure Firebase sign-in, and customizable colours and themes. Floating call windows and 5-minute limits make every interaction spontaneous, focused, and fun — perfect for quick, meaningful connections anytime.
KnockKnock! was featured in Productivity (649.7k followers), Meetings (6.4k followers) and Remote Work (4k followers) on Product Hunt. Together, these topics include over 131.7k products, making this a competitive space to launch in.
Who hunted KnockKnock!?
KnockKnock! was hunted by Robleh Jama. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how KnockKnock! stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Robleh Jama