Fake-door testing for app ideas
Know if your app idea will sell before you write a line of code
Describe your idea. Launcher builds the ad-ready test funnel, the Meta and TikTok creatives and the tracking, then tells you from real visitor behavior whether it's worth building.
Free to try · no card required · funnels hosted for you
- 3-7 days
- to a verdict
- $50-150
- in ad spend
- 100+
- visitors needed
The funnel
This is what your visitors see
One sentence in, a complete mobile funnel out, with its own icon and colours. Sample below: a hydration app that didn't exist yet.
How it works
From idea to verdict in three steps
Check the idea
Describe your app in a sentence. An AI scores it the way a paid-ads buyer would, and suggests sharper directions before you spend a dollar.
Launch the test kit
One click builds a hosted funnel, three ad angles with paste-ready copy, ad creatives for Meta and TikTok, and a tracked link for every ad.
Read the verdict
Real visitors move through the funnel and every step is measured. Launcher compares the result to the 2-5% web2app benchmark and tells you what to do next.
A waitlist
Months of building, then silence.
Most indie apps fail the same way: you build for a season, launch, and find out on the first day of marketing that nobody wants it. A waitlist only tells you who was curious.
A priced paywall
Emails are cheap. Reaching for checkout isn't.
The signal you needed was available before you wrote any code: who would actually pay, which ad found them, and where everyone else dropped off.
Features
Everything between the idea and the verdict
AI idea check
Scored on pain, market size, willingness to pay and ad reachability, with three sharper directions to test instead.
A funnel with its own look
Its own icon and colours, a one-question quiz, a founder note and a priced paywall. Edit any line, or rewrite it with AI.
Ad creatives
Static ads and slideshows sized for Meta Feed, Stories, Reels and TikTok, with your headline rendered into the image.
Audience research built in
The quiz shows who your visitors are and which answers went on to buy, so you learn who to target next.
A verdict you can act on
A confidence range against the 2-5% benchmark, not a gut feeling, with plain advice on what to do next.
A launch list
Everyone who reaches checkout becomes a pre-registration with their reason for interest. Export it as CSV.
FAQ
Questions
How can you test an app that doesn't exist?
A fake-door test: visitors see a normal-looking funnel with a real price, and you measure how many go as far as starting checkout. That behavior is a far better signal than a survey answer or a friend saying it sounds great.
Is the paywall deceptive?
The checkout form collects a name and an email, never a card, and visitors are told before they submit that no card is needed because the app is still being finished. Afterwards they are asked why they were interested, which is some of the most useful feedback you get.
How much do I need to spend on ads?
Plan on 3-7 days and roughly $50-150. A verdict needs at least 100 visitors, and the more traffic you send the tighter the confidence range gets.
What do the verdicts mean?
BUILD IT: the whole confidence range sits above 2% fake purchases. DON'T BUILD: the whole range sits below it. PROMISING: the range straddles 2%, so keep testing or sharpen the idea.
Do I need to code or design anything?
No. The funnel is generated and hosted for you, and the ad copy and creatives are ready to upload to Ads Manager.
Can I test iOS and Android ideas?
Yes. The funnel is platform-neutral because nothing is being installed yet.
Find out before you build.
Your first idea check takes a minute. No card required.