Most founders treat a landing page like a billboard. Put it up, admire it, wait.

Then nothing happens, and they can’t tell you why. Was it the wrong audience? The wrong promise? Not enough traffic to know anything at all? They guess. They tweak the headline because the headline is the easy thing to tweak. They ship again. They guess again.

That’s random. We’re going to make it systematic.

A landing page is an experiment, not an asset

Your landing page has a job: find out whether the right people want your promise enough to raise their hand. That’s a falsifiable claim. Which means it’s an experiment — and now LEANSpark treats it like one, start to finish.

You design the page as a traction experiment. Five questions, drafted from your validated context: who it’s for, the problem in your customer’s own language, the one falsifiable promise, the proof, the single call to action. Before you can start, a Page Prep gate checks that you’ve actually earned it — a committed segment, three interviews with insights, three documented alternatives, an offer, a ready voice. Every missing piece links to where you go earn it. No rubber-stamping.

Here’s the plot twist: the hard part was never building the page. It was knowing whether the page told you anything.

The loop that measures itself

The moment you record your page, the clock starts and the loop takes over.

Plan — your conversion goal is set: by default, 10% of visitors convert to signups over 14 days, with a 200-visitor floor so you don’t draw conclusions from noise.

Do — you push the page live. Your connected AI tool — Claude Code, Claude, Cursor, anything that speaks MCP — reports real visitor and conversion counts directly into the experiment. No copy-pasting numbers out of an analytics tab. No spreadsheet. The data arrives where the decision gets made.

Check — every few days a check card appears right in your chat: observed versus goal, with a verdict. When there’s no data yet, it nudges you with the exact prompt to report it. The entire measurement loop costs zero AI credits.

Act — this is where most tools stop and you’re left staring at a number. Not here. Off track? The card carries an Iterate on this page button that stages the next version — pre-aimed at the weakest dimension, missed metric named, one variable at a time, capped so you can’t iterate forever. On goal? A one-click Record the win that closes the experiment and writes a concluded learning into your record, graded by how far past the line you landed.

Iteration 2 of your page is the one that converted. The chain reads as one story, not a pile of orphaned drafts.

Why this matters

Transformation, not information. You don’t need another dashboard telling you your conversion rate. You need the loop closed — a real verdict, and the next move already staged against your evidence.

That’s the difference between working on your landing page and validating it. One feels productive. The other tells you the truth.

Walk through it: the landing-page experiment loop guide.