1
Describe your idea
Write a short description of the product you want to test.
FOUNDING50 — 50% off for the first 3 months· First 100 users only
Test if people will pay before you build.
1Create test
2Visitors try to pay
3Get decision
Get a BUILD / ITERATE / KILL decision from real behavior, not guesswork.
No credit card required. No traffic? We can run ads for your experiment.
✓First experiment: Free
✓Experiment setup: < 2 min
✓Traffic: bring yours or we run ads
✓Time saved: weeks of building
From the community
Founders who tested before building.
AK
Alex K.
Indie founder
Ran a demand test on my habit tracker idea. Got a KILL in 4 days. Means I would have spent 3 weeks building something nobody wanted.
KILLSaved ~3 weeks
PS
Priya S.
Micro-SaaS builder
I kept going back and forth on whether to build my invoicing tool. Monetly gave me a clear BUILD with 9% payment intent. Started coding the next day.
BUILDSaved ~4 weeks
MT
Marcus T.
AI tool maker
First test came back ITERATE. Repositioned the offer, ran a second experiment, and got BUILD. Without Monetly I would have shipped the wrong version.
ITERATESaved ~2 weeks
AK
Alex K.
Indie founder
Ran a demand test on my habit tracker idea. Got a KILL in 4 days. Means I would have spent 3 weeks building something nobody wanted.
KILLSaved ~3 weeks
PS
Priya S.
Micro-SaaS builder
I kept going back and forth on whether to build my invoicing tool. Monetly gave me a clear BUILD with 9% payment intent. Started coding the next day.
BUILDSaved ~4 weeks
MT
Marcus T.
AI tool maker
First test came back ITERATE. Repositioned the offer, ran a second experiment, and got BUILD. Without Monetly I would have shipped the wrong version.
ITERATESaved ~2 weeks
AK
Alex K.
Indie founder
Ran a demand test on my habit tracker idea. Got a KILL in 4 days. Means I would have spent 3 weeks building something nobody wanted.
KILLSaved ~3 weeks
PS
Priya S.
Micro-SaaS builder
I kept going back and forth on whether to build my invoicing tool. Monetly gave me a clear BUILD with 9% payment intent. Started coding the next day.
BUILDSaved ~4 weeks
MT
Marcus T.
AI tool maker
First test came back ITERATE. Repositioned the offer, ran a second experiment, and got BUILD. Without Monetly I would have shipped the wrong version.
ITERATESaved ~2 weeks
AK
Alex K.
Indie founder
Ran a demand test on my habit tracker idea. Got a KILL in 4 days. Means I would have spent 3 weeks building something nobody wanted.
KILLSaved ~3 weeks
PS
Priya S.
Micro-SaaS builder
I kept going back and forth on whether to build my invoicing tool. Monetly gave me a clear BUILD with 9% payment intent. Started coding the next day.
BUILDSaved ~4 weeks
MT
Marcus T.
AI tool maker
First test came back ITERATE. Repositioned the offer, ran a second experiment, and got BUILD. Without Monetly I would have shipped the wrong version.
ITERATESaved ~2 weeks
Comparison
Wrong path vs right path.
Build-first delays learning. Validate-first leads to confident decisions.
Wrong path
The usual path
Most founders build first.
The problem isn’t building. It’s building something you’re attached to — before anyone else has tried to pay for it.
Build MVP
Weeks or months building
Code before knowing if anyone wants it
Launch
Thousands in development
Time, money, and energy committed
Wait
No real demand signal
Trickle of users, unclear intent
No demand
Time and money wasted
The idea had no market demand
Right path
The Monetly path
Monetly flips the order.
Validate first. Build only when the signal is strong.
Describe idea
Start in minutes
Write what you want to test
Test page created
Instant experiment
Monetly builds the validation page
Get traffic
Bring yours or we run ads
Your channels — or let Monetly send visitors for you
Measure intent
Real behavior tracked
Purchase intent signals captured
Get decision
BUILD / ITERATE / KILL
Confidence-based, not gut-based
How it works
How validation works.
Fake-door testing infrastructure. Get a demand signal in days, not months.
2
Monetly creates the test page
A validation page with pricing, intent tracking, and a payment step. Ready in minutes.
3
Get traffic
Bring your own traffic or let Monetly run targeted ads for you. Visitors land on your page, see the price, and act — or don’t.
4
Visitors try to buy
Users reach the payment step. No real charge happens.
5
Monetly measures intent
Purchase intent and conversion signals are tracked automatically.
6
Get a decision
BUILD, ITERATE, or KILL — based on real behavior, not guesswork.
This is called a fake-door test — present the product before building it to measure purchase intent.
Decision engine
How Monetly decides.
No traffic → no decision. Bring your own or let Monetly generate it. Once visitors arrive, Monetly analyzes three signals and returns a decision with a confidence score.
Traffic
Payment attempts
Conversion signals
Confidence score
Decision
Possible outcomes
BUILDITERATEKILL
Comparison
How does Monetly compare?
Four common approaches to idea validation — only one measures real purchase intent.
Ask AIChatGPT, Claude, etc. | DIY ManualBuild it yourself | Audience TestingSurveys, interviews, beta | Recommended Monetly | |
|---|---|---|---|---|
| What it measures | AI predictions | Behavior (if set up right) | Opinions (saying ≠ doing) | Real purchase intent |
| Setup time | Instant | Weeks | Days | < 2 minutes |
| Requires building | No | Yes (page + payments + analytics) | No | No |
| Purchase intent signal | None | Possible (complex setup) | Indirect | Direct measurement |
| Result reliability | Low | Medium | Low–medium | High |
| Decision output | Opinion | Raw data | Survey results | BUILDITERATEKILL |
| Traffic acquisition | N/A | Setup campaigns, keywords, budget | Recruit participants manually | One click — Monetly handles it |
| Cost | Low | High (time + tools) | Medium | Free to start |
Most approaches give you data or opinions. Monetly gives you a decision.
Proof
Real validation outcomes.
Real experiments from real founders. Click any site to see the test page.
Idea
BudgetGuard
budgetguard.ioVisitors
534
Pay intent
1.6%
Conversion
0.5%
Confidence82%
Confidence: 82%
Decision: KILL
Saved ~5 weeks
High traffic, near-zero payment intent.
Idea
Papership
papership.ioVisitors
189
Pay intent
1.2%
Conversion
0.3%
Confidence76%
Confidence: 76%
Decision: KILL
Saved ~2 weeks
Low intent despite targeted traffic.
Idea
CarouselKit
carouselkit.appVisitors
278
Pay intent
9.4%
Conversion
5.1%
Confidence81%
Confidence: 81%
Decision: BUILD
Saved ~3 weeks
Strong conversion from content creators.
Idea
Bulletproof Resume
bulletproofresume.appVisitors
647
Pay intent
4.2%
Conversion
2.1%
Confidence68%
Confidence: 68%
Decision: ITERATE
Saved ~6 weeks
High traffic but conversion needs work.
Idea
RunwayCheck
runwaycheck.comVisitors
156
Pay intent
3.8%
Conversion
1.9%
Confidence64%
Confidence: 64%
Decision: ITERATE
Saved ~3 weeks
Promising signal, needs more traffic.
Idea
Rexion
rexion.devVisitors
421
Pay intent
8.1%
Conversion
4.5%
Confidence85%
Confidence: 85%
Decision: BUILD
Saved ~4 weeks
Developer demand confirmed.
Idea
Mobile App Policy
mobileapppolicy.comVisitors
312
Pay intent
7.8%
Conversion
3.9%
Confidence82%
Confidence: 82%
Decision: BUILD
Saved ~3 weeks
Niche demand validated quickly.
Audience
Who uses Monetly
Indie founders
Building without demand proof
Ship only what converts
Micro-SaaS builders
Wasting months on the wrong idea
Validate in days, not months
AI tool founders
Crowded market, unclear differentiation
Test positioning before building
Side project builders
Limited time, high opportunity cost
Focus on ideas with real demand
Pricing
Start free
Your first experiment is free. Paid plans unlock more experiments, traffic credits, and advanced validation tools.
Use code FOUNDING50 for 50% off for the first 3 months
Starter
Start with your first experiment free.
$29/mo
$14.50/mo
for the first 3 months with code FOUNDING50
- 3 experiments / month
- 1 live experiment
- Waitlist & fake door modes
- Decision engine access
- Auto-generated experiment URL
- Optional traffic via Google Ads (pay-as-you-go)
Pro
Run multiple experiments with enough traffic to generate your first signal.
$59/mo
$29.50/mo
for the first 3 months with code FOUNDING50
- 10 experiments / month
- 3 live experiments
- All experiment modes
- A/B testing (2 variants)
- Choose your experiment URL (permanent)
- $50 traffic credit includedGoogle Ads
- Optional traffic via Google Ads (pay-as-you-go)
- Analytics export (CSV)
- Custom domain support
- Hide "Built with Monetly" footer attribution
Advanced
For teams running continuous validation with traffic to reach reliable decision thresholds.
$99/mo
$49.50/mo
for the first 3 months with code FOUNDING50
- 30 experiments / month
- 10 live experiments
- All experiment modes
- A/B/C testing (up to 3 variants)
- Choose your experiment URL (permanent)
- $150 traffic credit includedGoogle Ads
- Optional traffic via Google Ads (pay-as-you-go)
- Priority support
- Analytics export (CSV)
- Custom domain support
- Hide "Built with Monetly" footer attribution
All plans include deterministic decision logic and optional traffic via Google Ads (pay-as-you-go). Traffic credits are used to run managed ad campaigns for your experiments. Cancel anytime. Not satisfied? Email us within 14 days for a full refund.
Traffic powered byGoogle Ads
FAQ
Questions before you start.
Who brings the traffic?
You can bring your own traffic or let Monetly run targeted ads for you. Pro and Advanced plans include traffic credits to get started. The core product is validation and decisioning — traffic is the input, not the feature.
How does Monetly-managed traffic work?
Monetly runs Google Ads campaigns directed at your experiment page. You control the budget — included credits are used first, then any additional budget you set. Traffic is directional, not guaranteed. Monetly measures behavior, not ad performance.
What does the traffic credit actually get me?
$50 in traffic credit typically brings ~80–150 targeted visitors depending on your market and keywords — often enough to start seeing early signal: do users click, reach checkout, and convert? Results vary by niche and audience. No traffic → no signal → no decision.
Do visitors actually pay?
No. Visitors can reach the payment step, but no real charge happens. Monetly measures purchase intent.
Can I use my own domain?
Yes. Pro and Advanced plans include custom domain support. Run experiments on a domain your audience already trusts instead of generic test-page URLs.
What is a fake-door test?
A fake door test is a landing page that lets users try to buy a product before it exists. If people attempt to pay, demand exists. If they don't, the idea likely has weak demand.
Why trust Monetly's decision?
Monetly decisions are based on behavior signals: real visitors, real payment attempts, and measurable conversion rates. Not surveys or opinions.
What kind of ideas work best?
SaaS, AI tools, micro-SaaS, and self-serve digital products. Anything where you can measure purchase intent before building.
Is this just a waitlist tool?
No. Monetly analyzes behavior signals and returns a decision.
How fast can I validate an idea?
Many founders see clear signals within a few days of traffic.
How much traffic do I need to validate an idea?
It depends on traffic quality and conversion behavior. Many founders get an early signal with a few hundred targeted visitors.
Start without commitment
Run your first test free. Send traffic, observe real behavior, and get a clear decision. Upgrade when you need more experiments.