You copied the ad that ran for 200 days. It still lost.
Poseidon tells you which format, which hook, which script and which audience actually win, measured on Meta's own numbers.
"Show me the biggest winning ads in Germany where women aged 45 to 54 are at least 30% of Meta's breakdown, with their hooks."
Wenn dein Bauch in den Wechseljahren so aussieht, dann bist du fett. Falsch.
If your belly looks like this in menopause, you're fat. Wrong.
Essential.beauty, 167 days live, EU reach (Meta's total) 2,555,982, women 45 to 54 are 33% of Meta's breakdown. See the ad
Essential.beauty, 162 days live, EU reach (Meta's total) 1,991,176, women 45 to 54 are 34% of Meta's breakdown. See the ad
Essential.beauty, 161 days live, EU reach (Meta's total) 1,491,420, women 45 to 54 are 32% of Meta's breakdown. See the ad
A real answer from Poseidon: 16 ads matched, the top 3 shown. Read on 12 November 2026. One search, 5 credits.
You know the feeling.
You found an ad that had been running for months. You copied the angle, the hook, the format. You paid for the creatives. You launched.
And it burned money.
Not because you did it wrong. Because "running for months" was never proof. It only means the brand didn't switch it off. It doesn't tell you how many people it reached, who they were, or whether the brand ran five other versions next to it and kept the loser by accident.
I know because I did it for years. I started building Poseidon "after launching hundreds of ads and understanding I'm losing money and time. As a founder you should make better choices."
Spy tools show you old ads. They never tell you why they won.
You've probably paid for one. Maybe two. People "pay hundreds for ad spy tools", and what you get is a feed of ads to scroll, sorted by how long they've run.
All of these spy tools just regurgitate the Ad Library.
And the moment you want more, the plan limits you. Searches capped. Calls capped. A subscription that keeps charging while you're not using it.
You don't need more ads to look at. You need to know which choice wins.
Get your free key
What Poseidon gives you instead
The real reach of every winning ad, read every day
Meta publishes how many people saw every ad shown in Europe, by country, by age and by gender. Almost nobody reads it. Poseidon reads it every day for every winning e-commerce ad it follows. 3,690 of them today. See which ads are gaining reach right now.
The script, cut into the parts that do the work
For the ads analysed so far, every sentence of the script is labelled. Hook. Problem. Proof. Offer. So you can see what the winners say in their first three seconds, word for word.
The brands' own A/B tests
Brands test their ads against each other all the time. Poseidon finds those tests and shows you which version won, by how much, with both ads to look at.
Weights, with the sample size
For each format, Poseidon crosses the data and gives you the numbers that matter. How long winners run, how far they reach, how many versions brands make. Always with how many ads it's based on. Under 30 ads, it shows nothing. Hooks and audiences come next, as they're measured.
We say nothing on data we don't have. If we have it, we can know for sure it's winning.
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What that looks like
Same video. Seven texts. Twelve times the reach.
A jewelry brand ran the exact same video with seven different texts, all within ten days.
Best text
3,590,391
EU reach (Meta's total)
Weakest text
290,483
EU reach (Meta's total)
The four launched on the very same day still range from 799,899 to 3,590,391. The winning text opens with a mother listing the initials of her four kids. The others talk about a gift for a sister, a TV character, a Mother's Day discount.
If you'd copied the wrong one, you'd have copied a loser and called it a winner.
Same image. Same day. One sentence apart.
A supplement brand ran two ads on the same day. Same image. Same body text. Only the first line changed.
The real reason more and more people can't sleep peacefully.
2,841,003
EU reach (Meta's total)
A new study found the real reason you wake up tired after 8 hours of sleep.
552,802
EU reach (Meta's total)
"A new study" sounds stronger. It lost by five times.
Same words. Three videos. Four times the reach.
One weight-loss brand in France has a video that has run 249 days. Its EU reach, Meta's total, is 2,766,753, and 100% of Meta's breakdown is in France. It opens with a customer's question, word for word.
I lost 10 kilos in 3 months, how do you explain it works so well?
The same brand put the same text on three different videos.
Best video
527,300
EU reach (Meta's total)
Weakest video
127,920
EU reach (Meta's total)
See the 249-day video on Meta's Ad Library
You can't see any of this by scrolling a library. In Poseidon it's one question.
Get your free key
Ask it the way you'd ask a friend
People are already typing it. "Give me a winning format, but go look."
Poseidon is where your assistant goes to look. Ask in plain words, right here in the box below, or from the AI assistant you already use: connect it in 2 minutes (Claude, Cursor, VS Code, n8n).
Try it now. 3 free questions a day, no key needed.
- Which hooks are winning in weight-loss ads in Germany?
- Which videos won brands' own tests in weight loss in France?
- Who do leggings ads actually reach in Spain?
You get real ads back. Each with its link on Meta, how long it has run, how many people it reached and who they were.
Get your free key
You only pay for what you use
We do not charge a subscription because it's a form of racket. We just charge for what you use. Fair.
€20 is 400 searches.
Credits never expire. A search costs €0.05. If a search finds nothing, it costs nothing. No monthly plan, no trial that turns into a bill.
Start with 100 free credits. That's 20 searches, on us, no card.
See all prices
Get your free key
Why this exists
We have one mission. To make people make better bets.
Poseidon is for e-commerce merchants who spend their own money on ads and want to know, before they spend it, what's really winning. Not what's old. Not what's loud. What reached people, and which version did it.
Try 20 searches. If it doesn't change the next ad you launch, you've lost nothing.
Get your free key
Ilyas, founder of Poseidon
Poseidon reads Meta's public EU transparency data. Reach is the number of people Meta says saw the ad, not sales. Every number shows the day it was read. Ads are shown by their link on Meta's Ad Library.
