The numbers don't match and that is the whole point
I typed "house cleaning service" into six different free tools last week. The results were a mess.
One tool said the phrase gets , searches a month. Another claimed it was over ,.
That is a sevenfold difference. And every single one of them was confident in its number.
This isn't an anomaly. It is the default state of free SEO data in .
We ran this test on November using a fake two-person cleaning company in Chicago. The site had five pages and almost no traffic.
The goal was simple: find which free tools actually help a small business pick the right phrases to target.
Why every tool gives you a different answer
Each company builds its own database. Moz scrapes one way. Semrush uses another.
Ahrefs pulls from over eight billion queries in its index. That is a fundamentally different sample.
So when Moz says "house cleaning service" has low difficulty and Ahrefs calls it easy while SE Ranking rates it at out of as not easy, they are all right within their own data models.
The problem is you cannot cross-check them. You have to pick one and trust it blindly.
The one tool that tells you the truth is hiding in plain sight
Google Search Console. Yes, really.
Every other tool on the market estimates what people might search. That is a guess based on historical data.
Search Console shows you the searches where your pages actually appeared. It is real traffic, not a prediction.
Open the Performance report and sort by impressions. Look for queries with high impressions but low clicks sitting in positions five through fifteen.
Those are your quick wins. Google already knows you exist for those searches. You just need to improve the page a little.
The hidden limitation nobody mentions
Search Console does not show every search. Google hides some queries to protect user privacy.
Once you add a filter, those hidden searches drop out of your totals entirely. Your filtered numbers will be lower than the unfiltered chart.
And if you are running a brand-new site with almost no traffic yet, Search Console will be nearly empty. That is where the other tools become useful.
How to build a workflow that actually works for small budgets
Stop treating these tools as interchangeable. They are not.
If your site already gets traffic from Google
Start with Search Console. Find the searches you already appear for and rank poorly on.
Then open Google Keyword Planner to check if those phrases have real demand. It gives you ranges instead of exact numbers unless your account is running ads.
For the final five or ten phrases on your shortlist, spend one free search in Semrush or SE Ranking to get difficulty scores and related ideas.
If you are launching a new website from scratch
Search Console will be empty. So start with Google autocomplete and People Also Ask to collect the exact words your customers use.
Compare two or three phrases in Google Trends to see which one people actually prefer and when the volume peaks.
Check demand in Keyword Planner. Then save your three free Semrush searches for the final shortlist only.
The Chicago cleaning company test case that changed my mind
Our fake two-person business in Chicago had eight candidate phrases after the workflow above.
"Cleaning services near me" had the highest search volume range at K to M. It looked like a no-brainer.
But that phrase also covers office cleaning and commercial janitorial work. Our fake business only does residential houses.
So we skipped it. The smaller phrase "house cleaning services chicago" at .K searches won the home page title instead.
The biggest number did not win. Intent and fit shaped the final list of pages worth writing.
What these tools still cannot tell you about your business growth potential
Here is the uncomfortable truth that most SEO blogs skip.
None of these tools can predict whether your page will rank. Not one. They show you what people search for.
They cannot tell you how many visitors that will bring. Or whether those visitors will call your business.
Treat your keyword shortlist as a list of pages worth writing. Not a traffic forecast.
The real validation happens months after you publish
Three to six months after your new pages go live, open Search Console again.
Look at which searches they actually show up for. That is your real data. Everything else was just a starting point.
The workflow shift that separates small businesses from the ones burning money on tools
I keep seeing small business owners buy three or four premium SEO subscriptions to get more data.
They spend hundreds a month on tools that all give contradictory numbers. Meanwhile they ignore the free data Google already has about their site.
Flip that order. Use the real traffic data first. Then use free estimates to fill in gaps.
That single shift saves money and gives you a clearer picture of what your customers actually want from your service.
A practical checklist for your next keyword research session
Open Search Console and filter by a word related to your service. Note the queries with high impressions but low clicks.
If you have no traffic yet, type your service into Google slowly and write down every autocomplete suggestion that appears.
Compare the top two phrases in Google Trends over twelve months. Pick the one with higher average interest.
Check both in Keyword Planner to confirm demand exists. Then spend one Semrush search on your final top five phrases only.
Write the pages. Wait a few months. Check Search Console to see what actually happened with your rankings.
The bottom line you should not ignore when choosing free SEO tools for small websites
Free keyword tools are estimates. Each one uses its own data and its own math.
The only tool that shows you real search behavior for your site is the one Google gives away free.
Use it first. Use everything else to fill in what you do not know yet.
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