SellProof searches Meta's Ad Library in each EU country you sell to and shows who already advertises your product, how many ads they run and for how long. The rule of thumb: when one competitor runs 100 or more ads, they're usually making money with it.
The demo is the same app with sample data. No account needed.
Example results with sample data, the way SellProof shows them.
Brands rarely keep paying for ads that lose money. So the number of ads a brand runs, and how long it keeps them running, is a strong signal of what sells.
Your words, the way buyers type them: “tragbarer Mixer” in Germany, “batidora portátil” in Spain. Not sure which words? It writes a prompt you paste into any AI chat.
An ad must contain one of your words. AliExpress, Temu, Amazon and other marketplaces are left out.
How many ads each brand runs in total, how many are about your product, and how long the oldest one has been live.
For Shopify stores: the matching products, their prices and the crossed-out “was” prices.
Worth testing when a competitor with 5 or more ads about your product runs 100 or more ads in total. Otherwise Maybe: look closer or Not proven. You can change both numbers.
Pick a product, check the search words for each country and run the check. You get the verdict, the reason behind it and what to do next.
The ads that have run for weeks and reached the most people, per country. Look inside your product's niche or across every niche.
Add brands by name. Each check compares with the last one: which ads are new, which stopped, and whether a brand is ramping up.
SellProof runs on your computer and has no server of its own. Your settings, access token and reports are saved there.
Save any check as a web page, a table (CSV) or a Markdown note. The Reports tab finds them as you type, even with typos.
Winning ads go into one Markdown file, so they show up in Obsidian or any app that opens Markdown.
What SellProof needs and what it can't do, so there are no surprises.
[payment terms]
After payment you get the download link by email.
SellProof uses Meta's official Ad Library API with your own developer account. It reads the same public ad data you can see at facebook.com/ads/library, country by country, without the clicking.
No. Meta's Ad Library API shows commercial ads for EU countries and the UK only.
No. You need a Facebook account to confirm your identity and create a free developer app. You don't need to run any ads.
Log in to facebook.com first. If Facebook asks you to confirm your account or set up a security step (like Advanced Protection), finish it, then click Check connection in SellProof. If it still doesn't connect, renew it with Connect to Meta in the sidebar: it only takes the token step, about a minute.
The same app, with made-up brands, ads and shops. All three tools work, nothing is sent to Meta, and you don't need an account. Choosing where files are saved is only in the real app.
Yes. The number of ads a competitor must run, how many must be about your product and the minimum days for a winning ad are all in Settings.
Windows 10 and 11, Macs with Apple Silicon (M1 or newer), and 64-bit Linux.
On your computer. SellProof sends your searches to Meta's Ad Library and reads competitors' public Shopify product lists. It has no server of its own.