Knockin' Review (2026): Pricing, Features & Honest Verdict

TLDR

Knockin’ is an AI business card: a shareable profile whose chat concierge answers visitors from your material and books meetings. Verdict: clever and cheap, but credits are unpriced per reply and the free start is a seven-day trial. Best for: founders and freelancers who repeat their pitch. Price: from $6/mo, no free plan. Rating: 6.5/10.

What is Knockin’?

We found Knockin’ on Product Hunt, where it finished fifth on 8 September 2026 with the tagline “Turns your static bio into an AI business card that replies”. You build a digital business card, feed it your work history, links and documents, and publish it as a link, QR code or phone wallet pass. Anyone who opens it can ask questions, and an AI concierge answers in your voice from the material you approved.

It is run by Lucius AI, Inc., a US company whose terms are governed by Delaware law. Knockin’ started life at luciusai.com/knockin as an offshoot of the company’s team-support product, and moved to its own domain, knockin.info, on 18 September 2026. That makes it a very young product. The app runs at app.knockin.info, and the marketing site is available in English, Spanish, Korean and both simplified and traditional Chinese.

What Are Knockin’s Key Features?

An AI concierge on your card

This is the product. A visitor opens your card and asks what you do, if you have worked with companies like theirs, or what you charge. The concierge answers from your approved knowledge and, according to Knockin’, declines questions it cannot support rather than guessing. When a conversation turns into something that needs you, such as a pricing negotiation or a partnership, it hands back with a summary and the visitor’s intent already captured.

Meetings booked in the chat

Connect Google Calendar and the concierge can find a free slot, collect the visitor’s name, email and reason for the meeting, and send the invite once they confirm. Your free and busy times are not shown publicly. Only one Google Calendar can be connected, so anyone who splits work across two calendars or uses Outlook is out of luck for now.

A knowledge base that keeps itself current

You add portfolio pages, product pages, documents and social profiles, and Knockin’ turns them into the knowledge the concierge answers from. When an answer is wrong, you flag it with a structured reason, such as wrong information, missing information or “shouldn’t answer this”, and the correction applies to the next visitor. On the top Scale plan, linked sources resync automatically every two weeks.

AI Contacts, not another CRM

Every visitor who talks to your card becomes a contact with context attached: where they came from, what they asked, and whether they came back. Knockin’ flags repeat visits and buying intent so you know who to follow up with. It is deliberately lightweight. It will not replace HubSpot, but it keeps a conference contact from becoming a name you cannot place a week later.

What Is It Like to Use Knockin’?

Setup follows three steps the product calls Build, Refine and Share. You pick one of eight templates, each with 15 colour themes, fill in your profile and contact details, and add knowledge sources. Then you test the card yourself, asking the kinds of questions a prospect would, and fix the weak answers.

Sharing is where it feels finished. You get a link for your email signature, a QR code for a printed badge, an image for platforms that prefer pictures, and an NFC-enabled wallet pass you can tap against someone’s phone. The share sheet covers WhatsApp, LinkedIn, X, WeChat, iMessage and email.

The design choices on the lower plan are limited. The Starter plan gets three essential templates. Custom colours, a custom logo and the premium templates need Growth, and the editor will stop you publishing a premium look until you upgrade.

Visitor requests arrive as Tasks. When someone asks for a meeting or raises something the concierge should not handle, Knockin’ creates a task and, if notifications are on, emails your sign-up address rather than the public email on your card. A Credit Usage page charts your spend over 7, 30 or 90 days, so after the first week you can at least see your own burn rate. One caution from the terms: anything on a public card can be indexed, copied or screenshotted by others, so keep private material out of it.

Where Does Knockin’ Fall Short?

You cannot tell what a credit buys. Each plan includes a credit allowance, and credits are spent on AI conversations, reply improvements and adding or updating knowledge. But Knockin’s own guide says “exact per-action costs are shown in the product”. So there is no way to know, before you pay, whether 800 credits on Starter covers 50 visitor conversations or 500. When the credits run out, your card stays public but the concierge stops replying, which is exactly when a prospect is most likely to notice.

The “free” language also oversells. The site says “Start for free” and “No credit card required” on every page, and the terms say Knockin’ “may offer free and paid plans”. In practice you get a seven-day trial with 500 credits that do not refresh. After a week, there is no free tier to fall back on. Paid credits do not roll over month to month, and fees are non-refundable, including for unused allowances.

Finally, trust is still being earned. The product is weeks old on its own domain, answers run through the OpenAI API, and the site shows no customer numbers or case studies yet. Knockin’ does say it does not train models on your content or visitors’ conversations, which is the right default.

How Much Does Knockin’ Cost?

Knockin’ starts at $6 a month billed annually, or $8 month to month, after a seven-day free trial with 500 credits. There are three plans:

• Starter, $6/mo yearly or $8 monthly: 800 credits a month, three essential card templates.
• Growth, $12/mo yearly or $15 monthly: 1,600 credits a month, all templates, custom colours and logo, unlimited knowledge links.
• Scale, $30/mo yearly or $35 monthly: 4,000 credits a month, automatic source sync every two weeks, unlimited document storage.

The annual discount shrinks as you go up: 25% on Starter, 20% on Growth, and only about 14% on Scale. Growth is the realistic entry point for most people, because Starter locks you into the basic templates.

For context, Blinq has a free plan with two digital business cards and a Premium plan at $9.99 a month, but no AI that answers questions. Delphi, which builds an AI clone of you for coaching and content, has a free tier and then jumps to $79 a month for Builder. Knockin’ sits between them: cheaper than an AI clone, but pricier than a plain card once you need the good templates.

Who is Knockin’ Best For?

Use Knockin’ if you are a founder, freelancer or consultant who explains the same thing to strangers every week, and you want a card that keeps answering after a conference or a cold intro. It suits people whose prospects do their research late at night and would rather ask than read a long About page.

Skip Knockin’ if you need predictable costs, since credit usage per conversation is not published. Skip it if you rely on Outlook or several calendars, or if a static card with a booking link already does the job for you.

Best Knockin’ Alternatives

Blinq

Blinq is a mature digital business card with a free-forever plan for two cards, wallet passes, QR sharing and email signatures. Premium is $9.99 a month and adds branded cards, a contact scanner and an AI notetaker. It does not answer visitor questions, but it is the safer pick for plain networking.

Delphi

Delphi builds a “digital mind” trained on your content that can chat and even take voice calls. It is more powerful than Knockin’ for creators and coaches with a large body of work, and much pricier: a free starter tier, then $79 a month for Builder and $299 a month for Scaler.

Linktree

Linktree is the default link-in-bio page, with a free plan and paid tiers for more branding and analytics. It lists where you exist online but answers nothing. For many people a Linktree plus a calendar link covers most of what Knockin’ does, without the credit meter.

Final Verdict: Is Knockin’ Worth It?

Knockin’ has a good idea and a thoughtful build. The concierge answers from what you approve, hands off when it should, books meetings, and remembers who asked what. The sharing options, from wallet pass to QR code, are more complete than most first versions. And at $12 to $15 a month for Growth, the price is low.

But the meter is hidden. Until Knockin’ publishes what a conversation costs in credits, you are buying an allowance with no unit. Combine that with a trial marketed as “free”, no refunds and no rollover, and we would test it hard during the seven days before paying. We rate it 6.5/10.