Designing a Freemium Funnel for a B2B Compliance Product

As a solo developer building a B2B SaaS, you have one massive disadvantage: you don't have a sales team.

You can't jump on 45-minute Zoom calls to do "product demos." You can't afford to take CTOs out to lunch. Your product needs to sell itself. This is often called Product-Led Growth (PLG), but in reality, it just means building a funnel that doesn't leak.

When I launched ComplianceRadar (an EU AI Act scanner), I knew the core value was the compliance report. But how much do you give away for free? And at what exact moment do you ask for the credit card? Here is how I structured the freemium funnel to convert B2B users without a single sales call.

The Problem: The "Give and Take" Balance

If you give away too much for free, nobody pays. If you give away too little, users leave before experiencing the "Aha!" moment because they don't trust you yet.

In the compliance space, the standard playbook is to hide everything behind a "Book a Demo" button. I hate that as a user, so I refused to do it as a founder. I wanted a self-serve model.

I decided to split the value proposition into two parts: The Diagnosis and The Cure.

• The Diagnosis is free: "Are we breaking the law?"
• The Cure is paid: "Exactly what lines of code/text do we need to change to fix it?"

Step 1: The Zero-Friction Entry

The funnel starts on the landing page. There is no "Sign Up" button blocking the core feature. There is just an input field: Describe your AI system or enter your URL.

By removing the authentication wall, the user gets immediate gratification. They hit "Scan," and the radar animation starts. This 10-second wait is crucial—it builds anticipation and shows that the tool is actually doing heavy lifting in the background.

Step 2: The Teaser Report (The "Aha!" Moment)

Once the scan is done, the user gets their free result: The Risk Classification.

They immediately see if their system is Minimal, Limited, High, or Unacceptable risk under the EU AI Act. This is the "Aha!" moment. They came with anxiety ("Am I doing something illegal?"), and I gave them clarity. Trust is established. But below that classification is where the funnel does the heavy lifting.

Step 3: The Blurred Paywall

I generated the full, actionable checklist of what they need to fix (e.g., specific transparency disclaimers, technical documentation requirements). But I didn't hide it behind a generic "Upgrade to view" banner.

Instead, I rendered the actual report and applied a heavy CSS backdrop-filter: blur().

Psychologically, this is incredibly powerful. The user can see the shape of the data. They can see that the exact checklist they need exists, right there on the screen, just slightly out of focus. They aren't paying for a promise; they are paying to remove the blur.

Step 4: Stripe and the Seamless Handoff

When they click "Unlock Full Report," they aren't taken to a complicated pricing matrix. They get a simple choice:

• €29 One-time: Just give me this PDF report so I can send it to my boss.
• €49/month: Monitor my site continuously as the AI Act evolves.

Clicking the button triggers a Stripe Checkout session. Using Next.js API routes and Stripe Webhooks, the moment the payment clears, the database updates, the blur is removed, and they have their data. No manual intervention required.

The Technical Reality

Building this wasn't just about UI/UX; it required a solid backend architecture.

I had to ensure that the initial free scan data was temporarily stored (using a session or local ID) so that when the user authenticates via NextAuth during the Stripe checkout process, the report successfully maps to their newly created user account. If that handoff fails, you get angry customers asking for refunds. Using Prisma and a carefully structured database schema ensured the transition from "anonymous scan" to "paid user dashboard" was flawless.

The Takeaway

A good B2B funnel respects the user's time.

Don't force them to jump through hoops to see if your product works. Give them the "What" for free to prove your competence, and charge a fair price for the "How." When you combine transparent value with a frictionless Stripe integration, you don't need a sales team. The product does the selling.

I'm Damir, a Full-Stack AI Systems Engineer. I build products that solve complex regulatory and technical problems.

Want to see this funnel in action? Try the scanner at complianceradar.dev ↗