Painted-door tests · free to build and publish

Stop building things nobody wants.

Describe your idea and we build a real landing page for it with you. Publish it free, put it in front of people, and see who actually signs up.

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No card needed. $50 when you’re ready for ads and results.

A demo run for an idea called RoomFit. The founder types the idea and answers a few questions, and we build a site from the answers. Publishing it is free. For $50 we make ads and show them on Instagram and Facebook. 25,250 people see the ad, 187 visit the site and 10 leave their email, which reads as Promising.

RoomFit demo run. Dots are illustrative, not to scale.

Ideas are plenty. Your months aren’t.

Find out if people want it before you commit your time, savings, and energy.

Here’s how you find out.

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Page builder · RoomFitIdea understood 100%
Furniture built to fit the room you actually have.
BuilderWho is it mainly for?Renters in small flatsFamiliesFirst-time buyers
Renters in small flats
BuilderHow ready is the product?Just an ideaPrototypeAvailable
Prototype

Some ideas earn a next step. Some don’t.

Five demo reports, one per decision band. Same measurement, five different answers.

Sample report · QuietTable · demo result

Reserve a quiet, laptop-friendly café table by the hour.

It’s not working.

Stop here. Put the money somewhere else.

234 visits, zero signups. After that much traffic, silence is the answer.

Real interestZero of 234 visits left an email address
0.0%Weak
Cost to find a leadNo leads to divide the spend by
NoneNo leads
Signal strengthEnough traffic to trust a no.
234 visitsClear
Sample report · SplitFair · demo result

Divide recurring household bills without a shared spreadsheet.

The offer missed.

Change the offer before you spend another dollar.

1.5% sits under your 2% stop line. Not a clean no, but not a go.

Real interest3 of 205 visits left an email address
1.5%Weak
Cost to find a lead$168 of ads bought three leads
$56.00Costly
Signal strengthLikely range 0.5% to 4.2%. Leaning no.
205 visitsFair
Sample report · PitchReady · demo result

Practise a sales pitch and get useful feedback before the call.

There’s something here.

Run one sharper test before you build.

4.2% clears the 2% stop line and falls short of the 5% target.

Real interest9 of 214 visits left an email address
4.2%Some
Cost to find a lead$176 of ads bought nine leads
$19.56Fair
Signal strengthLikely range 2.2% to 7.8%. One more run.
214 visitsFair
Sample report · RoomFit · demo result

Furniture built to fit the room you actually have.

It’s promising.

Build the smallest useful version.

5.3% passes the 5% target, short of the 7.5% build zone.

Real interest10 of 187 visits left an email address
5.3%Strong
Cost to find a lead$154 of ads bought ten leads
$15.37Cheap
Signal strengthLikely range 2.9% to 9.6%. Worth building on.
187 visitsFair
Sample report · FridgeFirst · demo result

Get a weekly meal plan built around food already in your kitchen.

People want this.

Stop polishing the hypothesis. Build it.

13.0% is well inside the build zone, above 7.5%.

Real interest32 of 246 visits left an email address
13.0%Strong
Cost to find a lead$182 of ads bought thirty-two leads
$5.69Cheap
Signal strengthLikely range 9.4% to 17.8%. Hard to argue with.
246 visitsClear

Free to build. $50 to learn.

Free

  • Build your landing page
  • Publish it
  • Use your own logo and images
  • Start collecting sign-ups

$50 once, when you’re ready to launch

  • See and export every lead
  • The full results and verdict
  • AI images and logo, if you want them
  • Ads run for you, no ad account needed

Ad spend: You decide. Paid through us, no markup.

Domain: At cost. Optional. Yours from the beginning.

Find out if your idea has demand.

You could have a page in front of people today.

Start free No card needed. $50 when you’re ready for ads and results.

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portaficta | stop building things nobody wants