How to Find Which Products Your Competitors Are Actually Winning With

Most competitor product research stops at the ad creative. That's why it's wrong. Here's how to see the actual SKUs driving a store's revenue before you pick your next product to test.

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Ad Spy Tools Show You Half the Picture

You open an ad library. You see a competitor running 80 active ads. Twelve of them look great.

Now answer this: which product is actually paying their bills?

You can't. Not from the ad library alone. An ad library shows you creative and a landing page. It doesn't rank the storefront catalog by revenue.

That's the structural flaw in how most operators do "competitor product research." You scroll ads. You screenshot hooks. You save a Notion doc called "winning angles." Then you pick a product to test based on what the ad looked like, not what was selling.

The difference matters. A brand can pour 60% of its budget into a hero product and still run ads for five other SKUs that do almost nothing. If you copy the ad without knowing which product it sold, you're copying the wrong half of the equation.

The Gap: Creative Data vs Product Data

Every ad spy tool is built around the ad, not the product. AdSpy, Minea, BigSpy, Meta Ad Library — all of them index creative. None of them rank the actual Shopify catalog by revenue.

So your research ends up looking like this. You find a cool ad. You click through to the landing page. You assume the PDP you land on is "the winner."

But most scaled stores route dozens of ads into collection pages or generic landers. What they're really selling is buried two clicks deeper. You need a second layer — a way to open a store and see, in ranked order, which products are moving.

That's where product intelligence starts.

Why Product Data Beats Creative Data

The reason winning operators open a store's catalog before they open its ad library comes down to signal quality.

Creative is fast to copy and fast to die. A good hook lives for two weeks, maybe four. A winning product carries a brand for months.

If you find the one SKU a competitor has been scaling for six months straight, you've found something real. You can model the margin. You can check the supplier. You can test a variant without guessing which angle the market wants.

Most operators get this backwards. They obsess over the creative — the hook, the UGC style, the opening frame — and never look at what the creative is actually selling. The creative is the wrapper. The product is the bet.

Step 1: Open Brand Analysis on a Competitor

Pick any brand you want to research. Drop the domain into Brandsearch — `gymshark.com`, `hexclad.com`, `meundies.com`, whatever you're studying. Hit enter.

You land on the Brand Analysis Overview. That's the page that replaces three research tabs you used to open one at a time: traffic trends, ad scaling, and a metrics banner with estimated monthly revenue and active ad count.

Scroll the Overview and you already see a strip of the top products pulled live from the brand's Shopify catalog. That's your first signal.

For the full ranked list — the one you'll actually use for product research — jump to the Bestsellers tab.

Step 2: Read the Bestsellers Tab

Click Bestsellers. You now see every product in that brand's store, ranked by inferred revenue, with prices, variants, thumbnails, and sort options for rank, price, newest, or A–Z.

This is what every ad spy tool is missing. Not "the products they sell." The products they're winning with, in order.

Read the top ten. You're looking for three things.

A clear #1 that's way ahead of the others — that's the hero SKU. Clusters of similar products at similar prices — that's the tested category they're scaling into. Newer products climbing the list — that's the brand's current bet.

Most brands have a shape you can read in thirty seconds. HexClad is anchored by two core pan sets. Gymshark is leggings-dominated. Allbirds has one shoe that carries the whole brand and eight variants that split the rest.

Once you can see the shape, you stop guessing which ad is the important one.

Step 3: Match Winners to Their Ads

Now flip back to the Overview and look at the ad scaling chart. Click into the active ads.

Here's the move. Match the top three bestsellers to the ads actually running. You'll see patterns immediately.

Usually one of three things happens. Either the hero product has its own dedicated creative set — the most common, because they know what's working and they're feeding it. Or the ads push a bundle that includes the hero alongside a new SKU they're trying to validate. Or there's a creative test batch that doesn't feature the hero at all — which tells you what they're trying to add to the winner.

Each pattern tells you something different about where the brand is in its lifecycle. A pure hero-product scale means they've found their winner. A bundle push means they're trying to raise AOV. A test batch off-hero means they're de-risking a new product launch.

You can't read any of this from an ad library alone. You need the product ranking next to the creative, same session, same screen.

Step 4: Read the Product Page for Confirmation

Once you know which product is winning, open its actual product page on the storefront.

Check the review count first. A top bestseller on a scaled brand usually has 300+ reviews. Reviews don't fake themselves to that level — that's your real-volume proof.

Check the variant count. Stores iterate variants on their winners, not on their losers. If the hero product has 12 color or size options and the rest of the catalog has two, that confirms what the Bestsellers tab already told you.

Check the bundle options. A real winner usually has a buy-2 or buy-3 discount bundle. Brands only build those when the repeat purchase rate is strong enough to push people into multi-unit carts.

Then scroll back to the Overview and read the Traffic Trends chart. If the line is climbing for the last 90 days, the product is carrying the brand's growth right now — not a legacy bestseller coasting on old SEO.

Volume, reviews, variants, bundles, climbing traffic. When all five line up on the same SKU, you've found the product the entire brand is built around.

Step 5: Zoom Out to the Whole Niche

Single-brand research is useful. It's not enough.

If you're picking a product to sell, you don't want to know only what Gymshark is winning with. You want to know what the whole activewear niche is winning with — which categories are scaling across multiple brands, which ones are dying, which ones are brand-new and not yet saturated.

Open the Brand Library and filter to the niche you care about. You now have a list of every tracked Shopify store in that category, with traffic and ad count side by side.

Click into five brands. Open each one's Bestsellers tab. Write down the top three products from each.

Patterns pop out fast. When four out of five brands have a leggings set in their top three, that's a saturated category. When three out of five just added a sports bra in the last 90 days, that's a niche-wide bet — and a signal the supplier is probably the same one.

That's what niche research actually looks like. Not reading trend reports. Opening five competitors and reading their storefronts in ranked order.

Step 6: Find Smaller Winners in Discovery

The gap in most niche research is the brands you've never heard of. The sub-million-a-month stores doing 5x ROAS on a product nobody has copied yet.

Open Discovery and search for the keyword of a winning product you just found. Filter to video ads. Sort by recent engagement.

You'll find brands running the same category as your known competitors but at a completely different scale — smaller, leaner, often with better angles because they can't outspend the incumbents. Those are the brands worth watching.

Add them to a swipe folder. Open their Brand Analysis. Check their Bestsellers tab. Repeat until you've seen every meaningful player in the category, not just the five you already knew.

What 15 Minutes of This Actually Tells You

Here's what one real pass through this workflow gets you for one niche.

You know the top three brands' hero products. You know which products are being scaled vs tested. You know the price range that's working — the average of the top-10 bestsellers across the niche. You know which categories are saturated and which ones are being newly opened. You have five smaller brands to watch because they're scaling ads you hadn't seen.

That's a real intelligence briefing on a niche. Not a vibes check.

You can't get any of that from an ad library alone. You can't get it from Google Trends. You can't get it from a guru's YouTube video. You get it by opening competitor storefronts in ranked order and reading them like data.

Free Tools to Start With

If you're not ready to commit yet, there's still a working starting point.

1. Brandsearch Chrome Extension — free, lives in your browser toolbar. Land on any Shopify store and you get instant traffic, ad count, tech stack, and estimated revenue without leaving the page. Every store you research carries straight into the full app when you upgrade.
2. Meta Ad Library — free, gives you the raw creative feed but no product ranking and no traffic context.
3. Google Ads Transparency Center — free, shows each advertiser's Google Search ad history. Useful for cross-referencing which products they push on search intent.

The Brandsearch Chrome Extension is the only free option that pulls product-level signal. The rest give you creative without the catalog next to it.

Summary: Your Competitor Product Research Workflow

Here's the full pass, in order:

1. Brandsearch Brand Analysis — open the competitor's Overview for traffic trends, ad scaling, and the metrics banner.
2. Brandsearch Bestsellers tab — read the ranked product list and identify the hero SKU, the test cluster, and the movers.
3. Brandsearch Brand Analysis ad scaling — cross-reference top SKUs against active creative to spot hero push vs bundle push vs test batch.
4. Brandsearch Brand Library — filter to the niche and repeat the Bestsellers read across five competitors to find category-wide patterns.
5. Brandsearch Discovery — search the winning-product keyword to surface smaller brands in the same category you didn't know about.

Most operators stop at step one and call it research. The top 10% run all five every time they pick a product to test.

Ad spy shows you the wrapper. The product ranking shows you the bet. Do both, in order, and you stop picking products from vibes.