PPC Competitor Analysis Tools: 9 Best PPC Spy Tools (2026)

The best PPC competitor analysis tools show you which keywords your rivals bid on, what their ads say and where they send traffic. Start with the free ones: Google Ads Transparency Center, Auction Insights and the Meta Ad Library. Add a paid tool such as Semrush or SpyFu when you need keyword and spend estimates.

Below, we compare 9 PPC spy tools by price, platform and best use, explain how accurate their data really is, and share the 5-step competitor audit our paid media team runs before every new campaign.

Key takeaways:

• Free Google and Meta tools show competitors’ actual live ads. Paid tools add keyword and budget estimates.
• Auction Insights is the only first-party competitor data. Use it before any third-party tool.
• Check that a tool covers Singapore. Several are built mainly on US data.
• Treat spend and traffic numbers as direction, not fact.
• Use competitor data to find gaps, not to copy ads.

What Is A PPC Spy Tool?

A PPC spy tool collects publicly visible ad data, such as search ads, display banners and social ads, and organises it by advertiser. Some tools also model the keywords a competitor bids on, their estimated clicks and their estimated spend.

These tools can’t see inside a competitor’s account. They can’t show real budgets, conversion rates or bidding strategies. Everything beyond the ad itself is an estimate.

PPC Spy Tools Compared At A Glance

Free PPC Spy Tools From Google And Meta

1. Google Ads Transparency Center

Google’s Ads Transparency Center shows the ads that verified advertisers are running across Google Search, Display, YouTube and more. Search by advertiser name or website, then filter by region (including Singapore), format and date.

• Best for: seeing a competitor’s real, current ad copy and creatives
• Limitation: no keywords, spend or performance data

[PLACEHOLDER: screenshot, alt “Google Ads Transparency Center showing a Singapore advertiser’s search ads”]

2. Auction Insights In Google Ads

Auction Insights, inside your Google Ads account, lists the advertisers who entered the same auctions as you. It shows their impression share, overlap rate, outranking share and top-of-page rate.

• Best for: knowing who you really compete with, and when they get more aggressive
• Limitation: only shows auctions you take part in; no keywords or ad copy

3. Meta Ad Library

The Meta Ad Library (formerly Facebook Ad Library) shows every active ad running on Facebook, Instagram, Messenger and Audience Network. Filter by country and search by page name or keyword. No login is required.

• Best for: creative ideas, offer testing and seeing how long competitors keep ads running (long-running ads are usually working)
• Limitation: no reach, spend or engagement data for commercial ads

We used this approach when planning a campaign that reached 8.45x ROAS on Meta Ads. [PLACEHOLDER: confirm how the Ad Library was used in this campaign, or remove this line]

4. LinkedIn Ad Library

LinkedIn’s Ad Library lets you search recent ads by company name or keyword. It’s useful for B2B advertisers checking competitors’ offers, lead magnets and messaging. For TikTok, use the Top Ads section of the TikTok Creative Center in the same way.

• Best for: B2B messaging and lead-gen offers
• Limitation: no targeting or performance data

Paid PPC Spy Tools

5. Semrush

Semrush’s Advertising Research shows the keywords a domain bids on, its ad copy history and estimated paid traffic. It has a Singapore database, which many tools lack. It also connects with its SEO data for keyword research.

• Best for: an all-in-one view of competitors’ paid and organic keywords
• Limitation: traffic and cost figures are estimates; the full PPC toolkit needs a paid plan

6. SpyFu

SpyFu focuses on competitor search ads. It shows the keywords a domain has bid on, its ad copy variations over time and its estimated monthly spend. Its long ad history makes it easy to see which ads a competitor kept running and which they dropped.

• Best for: historical ad copy testing and keyword overlap between competitors
• Limitation: data is strongest for the US and UK, so check coverage for Singapore before buying. It’s also one of the most-searched-for tools to replace (“SpyFu alternatives”), usually with Semrush or Ahrefs.

7. Ahrefs

Ahrefs is best known for SEO, but its Site Explorer also reports a domain’s paid keywords and the ads shown for them. It’s a good fit if your team already uses Ahrefs and wants one view of SEO vs PPC overlap.

• Best for: finding keywords a competitor pays for that you could rank for organically
• Limitation: lighter PPC depth than Semrush or SpyFu

8. Adbeat

Adbeat specialises in display and native advertising. It shows where competitors’ banner ads appear, which creatives they run and which networks they buy through.

• Best for: brands spending heavily on display or programmatic
• Limitation: no search keyword data; check market coverage for Singapore

9. iSpionage

iSpionage tracks competitors’ search keywords and ad copy, and monitors their landing pages for changes. That helps you see how they structure offers and calls to action.

• Best for: watching competitor landing page tests over time
• Limitation: smaller data set than Semrush; check country coverage

How To Choose The Right PPC Spy Tool

Match the tool to the channel you spend most on, then check these five things:

1. Keyword data: does it show which keywords competitors bid on, in your country?

2. Ad copy history: can you see how their ads changed over months, not just today?

3. Landing pages: does it capture where the ads send traffic?

4. Spend estimates: are they shown, and does the vendor explain how they’re modelled?

5. Market coverage: does it have Singapore (or your target market) data?

For most Singapore SMEs, the free Google and Meta tools plus one paid tool with Singapore data are enough. Businesses investing in Google Ads marketing in Singapore can use these tools to understand competitor strategies and identify opportunities to improve their own campaigns.

How Accurate Are PPC Spy Tools?

Ad copy and creatives shown in the Transparency Center and Meta Ad Library are real. However, keyword lists, clicks, and ad spend reported by third-party tools are modelled estimates based on sampled search results. Independent testing has shown that competitor analysis tools can differ significantly from actual Google Search Console data. Use these figures to compare competitors, not to set your exact advertising budget.

How To Run A Competitor Ad Audit In 5 Steps

1. List your real competitors. Start with Auction Insights, not the brands you assume you compete with.

2. Collect their live ads. Search each one in the Ads Transparency Center (filter to Singapore) and the Meta Ad Library. Screenshot the offers, hooks and CTAs.

3. Map their keywords. Pull paid keywords in Semrush or SpyFu, then look for gaps: high-intent terms they ignore, or terms where only one competitor bids.

4. Review their landing pages. Note page speed, offer, form length and trust signals. Compare them with landing pages that convert.

5. Act and re-check monthly. Test one new angle or keyword group at a time, then track changes in Auction Insights to see how competitors respond. Our guide on how to get more ROI from Google Ads covers the next steps.

How we use this at RHAD: For a healthcare client in Singapore, step 3 showed that [INSIGHT]. We built a campaign around that gap and cut cost per lead by 55% in 30 days.

What Not To Do With Competitor Data

• Don’t copy ad copy word for word. It won’t stand out, and it can create trademark or copyright problems.
• Don’t bid on competitor brand names without checking Google’s trademark policy. You can usually bid on the term, but you can’t use a trademarked name in your ad text without permission.
• Don’t chase their budget. Estimates can be far off, and their margins aren’t yours.

Turn Competitor Insights Into Better Campaigns

Spy tools show you what competitors are doing. Turning that into a better campaign takes testing and judgement. RHAD’s Google Ads management team runs this competitor audit as part of every new account setup.

Talk to our paid media team →