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Most founders burn six months and fifty thousand dollars learning their idea was wrong. SignalBench treats your idea as a scientific claim, publishes it, and lets real strangers vote with their clicks. You get evidence — not opinions — in five days, for the price of a decent dinner.
Fig. 01 — Illustrative feed · Anonymized sample · Not a live production export
of failed startups cite “no market need” as the primary cause of death. Source: CB Insights post-mortem corpus.
“The product worked.
Nobody wanted it.”
It is the single most common line on the graveyard of startup post-mortems. By the time that sentence gets written, it is already six months and fifty thousand dollars too late. We built SignalBench so that sentence never has to be written about your idea again.
Tell SignalBench the claim you want to test. One sentence is enough. No deck, no product, no technical spec — just the premise and who you think it is for.
SignalBench drafts audience definitions, geography, channel mix, ad copy, and a landing page that pitches the claim honestly. You approve or redirect every decision.
We push the campaign to Google, Meta, or TikTok under your ad account, with a hard spend ceiling you set. Real strangers start seeing it within the hour.
Impressions are noise. We track the only signals that matter: clicks, landing page dwell, scroll depth, and conversions against the offer you put in front of them.
On day five we return a Signal Index: strong, moderate, weak, or inconclusive — with the raw numbers, the confidence interval, and a written interpretation of what the evidence actually tells you.
Every SignalBench experiment produces a standardized bundle of demand metrics we call a Signal Index. It's how we compare your hypothesis to the historical distribution of ideas that went on to actually work.
Target reach calibrated to produce statistically legible conversion data.
Weighted median across active experiments. Your mileage will vary.
Time on LP before bounce — a core attention signal beyond the click.
Median cost per qualified lead across the 2026 Q1 cohort.
Median time from experiment launch to evidence-backed Signal Index.
Typical hard ceiling founders set per experiment. You control this.
Google Search, Meta Feed, TikTok In-Feed — expanding through 2026.
Composite index benchmarked to historical successful campaigns.
We have spent far too many years watching smart people ship products nobody asked for. The pattern is always the same: a good idea in the shower, a napkin sketch, three months of heads-down building, and then the quiet, cold moment when the first published link returns sixteen visitors and zero signups. The problem was never the code. The problem was that nobody tried to sell the thing before building it.
SignalBench is a bench in the oldest sense of the word — a place where you set your idea down, strap it in, and let real strangers push it until it breaks or holds. We run the ad, we write the copy, we host the landing page, we count the clicks. You come back on Friday and we hand you a verdict: strong, moderate, weak, or keep going. Build only the ideas the evidence protects.
— The SignalBench team
SignalBench integrates with Google Ads, Meta Ads, and TikTok Ads — platforms with strict review bars. Every part of our stack is designed with those review processes in mind.
A publicly accessible privacy policy describing every class of data we handle, every third-party processor, and our retention windows.
Any account holder or lead subject can request full erasure. A public data-deletion endpoint is documented for platform review.
All traffic is served over HTTPS with HSTS. Internal service-to-service calls are authenticated with short-lived tokens.
OAuth credentials, API keys, and platform tokens live in Google Cloud Secret Manager with tight IAM bindings and audit logging.
Every mutation on a campaign, asset, or lead is recorded with actor, timestamp, and diff — exportable on request.
Our creative generator refuses prohibited verticals (adult, weapons, deceptive schemes) at the prompt layer. Platform policies come first.
Stop building things nobody wants. Open the bench, publish a hypothesis, and be back Friday with an answer — for the price of a decent dinner.