Google Ads Competitive Analysis: 5 Tools That Really Work

February 22, 2025 • 10 min read •Nicolas Fabjan

The uncomfortable truth about Google Ads analysis tools

90% of all companies running Google Ads have no idea what their competitors are doing. They optimise blind – and burn budget in the process.

That is not a gut feeling. According to a WordStream study, the average click-through rate in the search network across industries is only 3.17%. Anyone who does not analyse their competition has no chance of getting above this average.

In almost every initial conversation with SMEs it turns out: Google Ads competitive analysis is completely missing. No auction insights report. No look at the ad copy of competitors. Nothing.

This article shows you 5 tools that actually make a difference in agency practice. No theoretical recommendations. Only what works – including honest pricing and concrete use cases for Google Ads competitive research.

Why a Google Ads competitive analysis is not "nice to have"

Before we get to the tools: why is Google Ads competitive analysis so decisive in the first place?

Google Ads is an auction. You bid against other companies for the same keywords. If you do not know who else is bidding, how much they pay and which ad copy they run – then you play poker without knowing your cards.

Concretely, a systematic Google Ads competitive analysis helps you with:

Budget assessment: what does the competition invest monthly? Can you keep up – or do you have to think niche?
Find keyword gaps: which keywords are competitors bidding on that you have overlooked?
Improve ad copy: which messages work in your industry? What can you do better?
Analyse landing pages: where does the competition send its traffic? Which offers do they use?
Recognise seasonal patterns: when does the competition ramp up budgets? When are there cheap time windows?

According to Google itself, the auction insights report delivers six different metrics for competitive comparison – from overlap rate to top-of-page rate. Most advertisers ignore this report.

Tool 1: Google Ads Auction Insights report (free)

Cost: free – directly in your Google Ads account

Best for: first overview of direct competitors

The most important Google Ads analysis tool is also free. The auction insights report is integrated directly in Google Ads and shows you:

Impression share: how often do you appear vs. the competition?
Overlap rate: how often do you and a competitor appear simultaneously in the results?
Position above rate: how often does a competitor stand above you?
Top of page rate: who takes the first position?

How to find the report: go to Campaigns > Keywords > Auction insights. You can filter at campaign, ad group and keyword level.

Practical tip: export the auction insights report monthly and track the development in Google Sheets. This way you immediately recognise when a new competitor appears or an existing one massively raises their budget. That is the basis of every serious Google Ads competitive analysis.

Limitation: the report only shows competitors bidding on the same keywords as you. If you overlook keywords, you also overlook competitors.

Tool 2: Google Ads Transparency Center (free)

Cost: free

URL: adstransparency.google.com

Best for: analysing ad copy and creatives of the competition

Since 2023 Google has made all running ads publicly viewable. In the Ads Transparency Center you can search by every advertiser and see:

All active ads (text, display, video)
In which regions the ads are running
The period of running
The verified advertiser name

Since 2025 Google additionally shows clearer payment profile details. So you see more precisely who stands behind an ad.

Practical tip: before you write ad copy, systematically search through all competitors in the Transparency Center. Document: which USPs are communicated? Which offers? Which calls to action? From this you develop copy that specifically stands out.

For Google Ads analysis at local level, this tool is gold – you can filter by region and see exactly which ads run in your catchment area.

Pro tip: there is a Chrome extension "Google Ads Transparency Data Exporter" you can use to export the data. Saves enormous time on systematic analysis.

Tool 3: SEMrush Advertising Research (from $139.95/month)

Cost: Pro plan from $139.95/month, Guru from $249.95/month

URL: semrush.com

Best for: comprehensive PPC competitive analysis with historical data

SEMrush is the Swiss army knife of Google Ads analysis. The "Advertising Research" function shows you for every domain:

Paid keywords: which keywords is a competitor bidding on?
Estimated monthly budget: what does the competition invest approximately?
Ad copy archive: historical ad copy with running times
Position tracking: how do paid positions change over time?
Traffic estimates: how much PPC traffic does a competitor generate?

According to a Rankability comparison (2026), SEMrush now has one of the most comprehensive and accurate keyword databases – also for the German-speaking region.

How it works in practice: for every new client a "PPC Competitive Landscape Report" is recommended. Enter the top 5 competitors and within minutes you receive: shared keywords, exclusive keywords of competitors (= our gaps) and budget estimates. That is the basis for every Google Ads competitive analysis.

Caution: SEMrush budget estimates are approximations. Do not take the numbers as absolute truth, but as orientation. The trend is usually right, the exact amounts deviate by 20-40%.

Tool 4: SpyFu (from $39/month)

Cost: Basic from $39/month, Professional from $79/month

URL: spyfu.com

Best for: PPC specialist with the best price-performance ratio

SpyFu is the most focused tool on the market for pure Google Ads competitive analysis. While SEMrush is an all-in-one tool, SpyFu concentrates on competitive research. And you notice it.

The core functions for Google Ads competitive analysis:

Complete keyword history: SpyFu stores PPC data since 2006. You see which keywords a competitor tested years ago and discarded.
Ad History: every ad variant a competitor has ever run – with running time.
Keyword Overlap: visualisation of keyword overlaps between you and the competition.
SpyGPT: since 2024 SpyFu offers AI-supported analysis. You ask questions in natural language: "Which keywords did [competitor] add in the last quarter?"
RivalFlow: identifies content gaps versus competitors.

Practical tip: anyone who primarily needs Google Ads competitive analysis often does better with SpyFu than with SEMrush. Reason: from $39/month you get unlimited search queries and data exports. With SEMrush you pay $140 and still have limits. For pure PPC analysis SpyFu offers the better price-performance ratio.

Limitation: the data basis for the DACH region is weaker than with SEMrush. For the German market SpyFu is better suited as a complement – not as the only Google Ads analysis tool.

Tool 5: Ahrefs Site Explorer (from $129/month)

Cost: Lite from $129/month, Standard from $249/month

URL: ahrefs.com

Best for: combination of SEO and PPC analysis

Ahrefs is primarily known as an SEO tool. But the Site Explorer has an underestimated PPC analysis function that is extremely useful for Google Ads analysis.

What Ahrefs offers for PPC competitive analysis:

Paid Keywords Report: all keywords a competitor is bidding on
Paid Pages Report: the landing pages with the most paid traffic
Traffic Value: Ahrefs calculates what the organic traffic would cost as PPC traffic. Conversely, you see what competitors pay for their paid traffic.
PPC Competitors Report: automatic detection of the closest PPC competitors based on keyword overlaps

Practical tip: Ahrefs is particularly suitable for the bridge between SEO and PPC. Does a keyword rank well organically – are ads still worth it? Ahrefs shows whether competitors do this. And it shows keywords where competitors run ads even though they rank well organically – a clear signal that this keyword converts.

Free alternative: Ahrefs offers a limited, free version with the Webmaster Tools. For your own domain you can run basic analyses with it – for Google Ads competitive analysis, however, you need at least the Lite plan.

Which tool fits you? The honest comparison

Practical recommendation:

For beginners: start with the two free Google tools. Auction insights report + Transparency Center cover 60% of the basic analysis.
For SMEs with Google Ads budget >EUR 5,000/month: SpyFu as the first paid tool. The price-performance ratio is unbeatable.
For agencies and companies with >EUR 20,000 ad spend: SEMrush or Ahrefs. The investment pays off many times over through better decisions.

5 steps to a systematic Google Ads competitive analysis

Here is a proven process for systematic competitive analysis:

Step 1: identify competitors

Use the auction insights report to find your direct PPC competitors. Complement with a Google search for your top keywords.

Step 2: analyse keyword gaps

In SEMrush or SpyFu, compare your keywords with those of the competitors. Focus on keywords competitors use and you do not.

Step 3: document ad copy

Screenshot all ads of the top 3 competitors from the Transparency Center. Categorise by USPs, offers and CTAs.

Step 4: assess budget and timing

Use SEMrush or SpyFu for budget estimates. Observe seasonal swings over 6 to 12 months.

Step 5: derive strategy

Where can you be better? Where cheaper? Where do competitors have gaps? Build your campaign structure on this.

Repeat this process quarterly. Competition in Google Ads changes constantly.

Common mistakes in Google Ads competitive analysis

The typical pitfalls from practice:

Mistake 1: only looking at keywords

Keywords are important. But the landing page decides the conversion. Always also analyse where the competitor sends his traffic.

Mistake 2: taking budget estimates as fact

No external tool knows the real Google Ads budgets. Use estimates as direction – not as absolute number.

Mistake 3: analysing once and forgetting

Google Ads competitive analysis is not a one-off project. Markets change. Competitors adjust strategies. Without regular repetition your analysis quickly becomes worthless.

Mistake 4: too many tools at once

Start with one tool and master it. Only then add. Anyone who introduces three tools at the same time uses none of them properly.

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FAQ: frequently asked questions on Google Ads competitive analysis

Which is the best free tool for Google Ads analysis?

The Google Ads auction insights report is the best free tool. It shows direct competitor data from Google's own data source – more accurate than any external tool. Complement with the Google Ads Transparency Center for ad copy analysis.

How often should you do a Google Ads competitive analysis?

At least quarterly. In strongly contested industries (e-commerce, insurance, lawyers) monthly makes sense. You should keep the auction insights report in view weekly – that takes only 5 minutes.

Can I analyse Google Ads competition without a paid tool?

Yes, basically. Auction insights report and Transparency Center are free and deliver solid base data. For deeper analyses – historical data, budget estimates, keyword gaps – you need a paid Google Ads analysis tool like SpyFu (from $39/month).

What is the difference between SEMrush and SpyFu for Google Ads competitive analysis?

SEMrush is an all-in-one tool with strong PPC analysis as part of a bigger package (SEO, content, social). SpyFu is specialised in competitive research and offers a better price-performance ratio for PPC analysis. For the DACH region SEMrush has the better data coverage. For US-heavy analyses SpyFu is often sufficient.

How accurate are the budget estimates of Google Ads analysis tools?

From our experience at Nordsteg: the trend is right with SEMrush and SpyFu in about 80% of cases. The exact amounts typically deviate by 20-40%. Use the numbers for relative comparisons ("competitor A invests significantly more than B"), not for absolute budget planning.