The best ad spy tool depends on what you need to learn: use platform libraries to inspect advertisers, a saved-ad workspace to organize references, and a specialist database when its search coverage saves time. Start with the free sources below, then test one paid option against a fixed research brief. An ad's visibility or longevity does not establish its profitability.
Reviewed October 15, 2026. This comparison uses public product information, not a paid-account benchmark. WhatWins is now an ads publication with free tools. The discontinued WhatWins app and its former pricing have been removed from this guide.
1. Match the tool to the question
| Research task | Starting point | What to check before relying on it |
|---|---|---|
| Inspect a known Meta advertiser | Meta Ad Library | Correct Page, country and active filters |
| Find an advertiser's Google creative | Google Ads Transparency Center | Advertiser identity, region and date selection |
| Study TikTok creative examples | TikTok Top Ads | Region, objective and the selection limits |
| Keep a shared library of references | Foreplay | Saving, organization and access for your team |
| Search a specialist TikTok ad database | Pipiads | Relevant results for your actual market |
| Explore ecommerce advertising and products | Minea | Channel coverage and the source of product signals |
These are starting points for evaluation, not a measured ranking. A tool that returns thousands of examples can still miss the one advertiser you need. A free library can be enough when your weekly list contains only a handful of brands.
2. Start with the official libraries
For Meta, search the advertiser in Ad Library. Keep its Page identity with the reference. Brands with similar names, regional Pages or separate retail accounts are easy to confuse. Record the search country and date so a teammate can repeat the check.
For Google, Ads Transparency Center lets you search by advertiser or website. Use it to inspect the creative and advertiser behind an observed ad. Your own conversion report answers a different question: what happened after people interacted with your campaigns.
For TikTok, Top Ads contains advertiser-authorized examples and offers creative filters. Treat the selection as inspiration rather than a complete record of every competitor campaign. The TikTok-specific comparison explains how to separate that source from commercial-content transparency records.
3. Evaluate paid tools on a real brief
Foreplay presents saving, shared organization, discovery and competitor tracking as parts of its creative workflow. It belongs on your shortlist when the bottleneck is turning references into a usable team library. During an evaluation, save three references and ask another teammate to find the intended hook and brief without a walkthrough.
Pipiads markets TikTok and Facebook ad research. Test whether its searches return relevant examples in your language and region. Verify what each metric represents before putting it into a client presentation.
Minea focuses on ecommerce ad and product research. Keep your product decision separate from a platform's discovery score: a promising-looking ad does not tell you shipping costs, returns or contribution margin.
Confirm current plan limits directly before subscribing. Record the seats, search allowance, exports and cancellation terms you actually need. This guide deliberately avoids a price table that would turn an old plan into an apparent current offer.
4. Run the same comparison in each tool
Download the research evaluation sheet. It includes a blank decision record and a fictional worked example.
Use one brief: a travel bottle sold in the UK, with leak prevention as the hypothesis. Search the same three advertisers and two problem phrases in each candidate. Keep the date range consistent wherever the interface allows it.
For every useful result, record the source link, advertiser identity, opening visual, claim, offer and destination. Then write one sentence explaining how it changes your brief. Count useful references, duplicates and missing advertisers separately. Record time spent, but do not combine unlike tasks into a universal speed score.
A useful decision could be: “The free library covered our known competitors. The paid workspace made team retrieval easier, but we have not justified its cost yet.” That is an illustrative conclusion, not the result of a WhatWins vendor test.
5. Turn research into a testable idea
Separate observation from interpretation. “The opening shows a bottle turned upside down” is observable. “This is their best-selling ad” needs evidence you probably do not have. Write the hypothesis as “A leak demonstration may answer a buyer's main objection” and define your own test.
Use the creative test budget guide to plan the comparison. For Meta and Google campaign operations after the brief is approved, see our AdRails workflow. Research references remain inputs to a decision; they are not permission to copy another brand's assets or launch spend.
Can an ad spy tool show a competitor's ROAS?
Do not assume a visible engagement count, estimated spend or long running period reveals ROAS. Label estimates as estimates and keep their source. Without reliable revenue, spend and attribution definitions, you cannot turn an observed ad into a profitability claim.
Is a paid tool necessary for a small team?
Only if it solves a measured bottleneck. Start with a fixed advertiser list, a shared reference sheet and the official libraries. Pay for additional coverage or organization after a trial shows that it improves your actual weekly work.