Meta Ad Library
Every ad running across Facebook and Instagram, searchable by advertiser, free and with no login. Shows the creative and the date it started, which is the closest thing to a performance signal public data offers.
Free spy tools
Free Spy Tools for Ecommerce Creative Research
Free spy tools are the public ad libraries the platforms publish themselves, plus the capped free tiers of commercial tools. Between them they cover most of what a paid subscription shows, because the paid tools largely read the same public sources. They are genuinely useful for finding what rivals are testing. They cannot tell you which of those angles your own customers would buy, which is the half that decides your results.
The short version
- The best free ad spy tools are first-party: Meta Ad Library, Google Ads Transparency Center and TikTok Creative Center. No account needed.
- No tool at any price shows competitor spend or ROAS. That data lives in the ad account, so anything displaying it is estimating.
- Ad longevity is the only real performance signal in public data. Sort by how long an ad has run and ignore almost everything else.
- Competitor ads are evidence about their audience. Whether an angle works on yours is answered only by your own reviews and results.
How to Run Free Competitor Ad Research
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1
Start with the libraries the platforms publish themselves
Meta Ad Library, Google Ads Transparency Center and TikTok Creative Center are free, need no account, and cover their own inventory completely. Most commercial spy tools are built on these same public feeds, so this is where the actual data lives rather than a cut-down version of it. Pull the three or four competitors you genuinely lose deals to, not everyone in the category.
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2
Filter by how long each ad has been running
Longevity is the only performance signal public data gives you. An ad still live after ten weeks is being funded by results. One that launched on Tuesday is a hypothesis somebody else is paying to test. This single filter removes most of the volume and nearly all of the noise, and it takes about a minute per competitor.
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3
Extract the argument, never the execution
Copying a rival's format gives you a worse version of their ad. What transfers is the claim underneath it: which objection they answer first, what proof they attach, which buyer they wrote for. Write that down as a sentence. If you cannot, you have collected a screenshot rather than an insight.
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4
Check every angle against your own customers
This is the step free tools cannot do and the step that decides whether any of it pays. A competitor leaning on a price objection proves that objection matters to their audience. If it never appears in your reviews, adopting the angle imports their strategy and none of their context.
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5
Turn the survivors into a brief the same week
Research that does not become a testable hook within days becomes an archive nobody opens. Decide before you start what the output is and who receives it. Two angles briefed beats forty screenshots filed.
Where the Free Data Comes From
The platforms built these libraries as transparency products and left them open to everyone. Meta's own documentation describes its Ad Library as a searchable collection of all ads currently running across its technologies, Google's Ads Transparency Center covers Search, Display and YouTube, and TikTok's Creative Center goes furthest by publishing engagement metrics on top ads by industry.
This matters when deciding whether to pay for anything. Most commercial spy products are built on these same public feeds. A subscription buys search across many advertisers, saved boards, tagging and alerts. Those are conveniences, not access, and the underlying creative is public either way.
The Free Sources Worth Your Time
Five free sources plus one you already own. Ranked roughly by how much usable signal an ecommerce team gets per hour spent inside them.
Ads Transparency Center
Ads across Search, Display and YouTube, filterable by advertiser, format and region. The only free window into the YouTube pre-roll a competitor is currently running.
TikTok Creative Center
Top ads by industry, region and objective, with engagement metrics attached. The one free source publishing performance signal rather than creative alone, which makes it the strongest free proxy for what works.
Company page Ads tab
Every LinkedIn company page lists the ads it has run in the past year. Free, no tooling, and consistently forgotten by teams paying a subscription that surfaces the same thing.
Capped plans on paid tools
Most commercial spy tools offer a handful of free searches with no saving or exports. Fine for a one-off check. The cap usually lands exactly where a repeatable process would start.
Your reviews and comments
Free, already owned, and the only source describing your buyers rather than someone else's. No spy tool at any price can tell you which of a rival's angles your customers would respond to.
What Free Gets You, and Where It Stops
Free tools are not the budget option in this category. They are the source. The honest limits below are shared by every paid product too, which is worth knowing before a subscription goes on the card.
It costs nothing and the data is first-party
The platforms publish these libraries as transparency products. You are reading the source rather than a vendor's copy of it, which also means no coverage gaps and no stale index.
Longevity beats volume as a signal
A free library that shows start dates tells you more than a paid dashboard showing thousands of creatives with no indication of which survived. Sort by duration and the useful set is small.
The limit is the same at every price
No tool, free or paid, shows a competitor's spend, ROAS or conversion rate. Those live inside the ad account. Anything displaying them is modelling from public signals, so paying more does not buy truth.
The gap free tools leave is the one that matters
Competitor ads tell you what worked on their audience. Whether it works on yours is answered only by your own reviews, comments and campaign results, and that is the half worth automating.
"Most teams paying for a spy tool are paying for search convenience over data they could already see for free. Sometimes that is a fair trade. It stops being one the moment nobody has an hour a week to read what the tool collects."
When Competitor Ad Research Actually Pays
Entering a new category
Read the longest-running ads from the five brands already there. Twenty minutes gives you the arguments the category has settled on, and more usefully the ones nobody is making.
Your CPMs jumped and nothing changed
Check whether rivals launched into your audience. Rising costs with steady engagement is auction pressure, not fatigue, and the two need opposite fixes.
The testing slate has run dry
When your angle bank is exhausted, competitor libraries restock the hypothesis list quickly. Filter each candidate against your own reviews before briefing any of them.
Briefing a creator or agency
Reference ads make a brief concrete. Send the two longest-running examples plus the objection you want answered, rather than a moodboard and an adjective.
The Step No Spy Tool Can Do For You
A rival's ad is evidence about their customers. Whether the same argument moves yours is a separate question, and it is answered by your own reviews, comments and campaign results rather than by more competitor screenshots. Mirella Crespi, CEO of Creative Milkshake, names the step that gets skipped: “There is a method to the madness of actually looking through creatives, taking those learnings from your competitor's research, and then turning it into something that you can actually execute. This is what we call the creative analysis stage of research.”
That translation is where the return sits, because the argument inside the ad is the main variable a team still controls. Nielsen's creative-effectiveness research credits creative, not targeting or media spend, with up to 89% of a digital ad's in-market success. Selzee reads your reviews, comments, Shopify data and Meta Ads performance and returns the objections and angles that move your buyers, so competitor research becomes a source of hypotheses rather than a source of guesses.
For the paid landscape, the best Facebook ads spy tools compared covers what a subscription adds. The business ad library guide goes deeper on Meta's library, and competitor advertising covers the strategy and the legal line when you compete directly.
What Selzee Costs Once Free Research Runs Out
The libraries stay free forever and you should keep using them. Selzee is the paid half: it reads your own customer data continuously instead of showing you somebody else's ads. Every plan carries the same features, so the tier is about volume rather than access.
Solo & individuals
From $150/mo
From 60,000 credits / month
SMBs
From $300/mo
From 125,000 credits / month
Most popular
Enterprise
From $1,500/mo
From 600,000 credits / month
New accounts start with free credits and no card. If you only need occasional competitor lookups, the free libraries above are genuinely enough and this page would rather say so than sell you something.
Free Spy Tools: FAQ
01 What is the best free spy tool for ads? +
The platforms' own libraries: Meta Ad Library, Google Ads Transparency Center and TikTok Creative Center. All three are free, need no account, and are complete for the inventory they cover, so no third-party tool beats them on the platform they cover.
02 Do free spy tools show competitor ad spend? +
No, and neither do paid ones. Spend, ROAS and conversion rate live inside the advertiser's account. Meta publishes spend and reach ranges only for social issue, electoral and political ads, which no ecommerce brand falls under. Any figure shown for a normal advertiser is an estimate.
03 Is using ad spy tools legal and allowed? +
Reading the public libraries is the intended use, and Meta and Google publish them deliberately as transparency products. Where teams get into trouble is scraping at volume against a platform's terms, or repeating a competitor's unverified claims as their own.
04 When is it worth paying for a spy tool? +
When discovery across many advertisers at once is genuinely your bottleneck and someone owns acting on it. A subscription buys search, saved boards and alerting. It does not buy access to data the free libraries lack, and it will not create a habit nobody currently has.
05 How is Selzee different from a spy tool? +
A spy tool shows you what competitors are testing. Selzee reads your own reviews, comments, product data and campaign performance and tells you which angles your customers respond to. Use the free libraries for hypotheses and Selzee to decide which are worth your budget.
06 Can I do competitor ad research without any tools at all? +
Yes. The three platform libraries plus a spreadsheet covers most ecommerce teams. Record the advertiser, the angle, the start date and the objection each ad answers. The discipline of doing it weekly matters far more than the software.
Free libraries show you what competitors are running. Selzee shows you which of those angles your own customers already respond to, by reading your reviews, comments and campaign performance. Book a demo and we will run it on your accounts and hand back the hooks and briefs it produces on your products.
Request Your Free DemoKeep exploring: the best Facebook ads spy tools compared, Facebook ad spy intelligence, AdSpy alternatives, competitor advertising.