KeywordNumbers vs Semrush, Ahrefs & Moz
The popular SEO platforms are powerful — and expensive. Here is an honest, side-by-side look at how KeywordNumbers compares to the tools people search for most, and where a free option is all you actually need.
| Tool | Starting price | Free version | Sign-up needed | Best known for |
|---|---|---|---|---|
| KeywordNumbersYou are here | Free — £0 | Always free | None | Dozens of free SEO, keyword & YouTube tools |
| Semrush | from $139.95/mo | LimitedFree account capped at ~10 searches a day | Yes | All-in-one SEO & PPC suite |
| Ahrefs | from $129/moStarter tier $29/mo | LimitedFree Webmaster Tools — your own verified site only | Yes | Backlink & keyword research |
| Moz Pro | from $49/mo | Trial only7-day trial; a few limited free tools | Yes | Rank tracking & site audits |
| Ubersuggest | from $12/moor one-off lifetime deal | Limited3 free searches a day | Yes | Keyword & content ideas |
| Mangools (KWFinder) | from $29/mo | LimitedFree plan with a handful of monthly lookups | Yes | Beginner-friendly keyword research |
| SE Ranking | from $129/mo | Trial only14-day trial (no card needed) | Yes | Agency rank tracking & reporting |
| Keywords Everywhere | from $84/yrpay-as-you-go credits | LimitedExtension is free; volume metrics cost credits | Yes | Search volume inside your browser |
| Keyword Surfer | Freepart of Surfer SEO | FreeFree extension; deeper data needs paid Surfer SEO | No | Search volume on Google results |
| AnswerThePublic | from $11/mo | Limited3 free searches a day | Yes | Question & topic discovery |
| SpyFu | from $39/mo | LimitedLimited free searches; full data on paid | Yes | Competitor & PPC intelligence |
| Google Keyword Planner | Freeneeds a Google Ads account | FreeFree, but volumes shown as broad ranges | Yes | Ad planning & volume ranges |
Prices are the providers’ own advertised starting prices (USD) at the time of writing and may change — always check the provider’s site for current pricing. Comparison shown in good faith to help you choose the right tool for your budget.
Why choose KeywordNumbers
We will never pretend to replace an enterprise platform. But for the jobs most people actually do every day, here is where a free tool wins.
Free, not “freemium”
Every tool is fully free with no trial countdown and no locked features nudging you towards a monthly bill.
No sign-up, no card
Open any tool and use it straight away. There is no account to create and no card details to hand over.
No usage limits
Run as many searches and checks as you like. There are no daily caps or credits to ration.
Dozens of tools in one place
Keyword research, on-page checks, technical SEO and YouTube tools — all under one roof, all free.
Simple and private
No onboarding, no dashboards to configure and no data harvesting. Type, get your answer, move on.
Built for real budgets
Made for creators, bloggers and small businesses who need practical answers without an enterprise price tag.
Feature-by-feature
| Feature | KeywordNumbers | Typical paid tool |
|---|---|---|
| Keyword search volume & trends | ||
| Keyword research & related terms | ||
| Keyword difficulty & gap analysis | ||
| Technical SEO checks (PageSpeed, DNS, SSL, headers, robots) | ||
| On-page tools (meta tags, SERP preview, readability) | ||
| YouTube keyword, tag & hashtag tools | ||
| Free browser extension | ||
| No sign-up or account needed | ||
| No daily search or usage limits | ||
| No credit card, ever | ||
| Huge historical backlink index | ||
| Daily automated rank-tracking dashboards |
When a paid tool is still worth it
We are not here to bash the big platforms — they are genuinely excellent. If you need a vast historical backlink index, daily automated rank tracking across hundreds of keywords, or white-label client reporting at agency scale, a subscription to Semrush, Ahrefs or SE Ranking will serve you well. KeywordNumbers is built for the far more common case: you want a quick, reliable answer for keyword research, an on-page check or a technical audit — without a monthly bill or a sign-up wall in the way.
Free Moz alternative — what you actually get
Moz Pro starts at $49 a month and includes rank tracking, site audits and its own keyword-difficulty metric (Domain Authority). It is a solid platform — but if you only need the core jobs most people open Moz for, there is a free option.
KeywordNumbers covers keyword search volume, keyword difficulty, keyword clustering, keyword gap analysis, on-page SEO checks (meta tags, title tags, readability, SERP preview) and technical audits (PageSpeed, DNS, SSL, HTTP headers, robots.txt) — all without an account. You do not get Moz’s historical backlink index or Domain Authority score, but for everyday keyword research and technical checks the free tools handle the same tasks.
If your budget does not stretch to $49+ per month, or you just need a quick answer without logging into a dashboard, KeywordNumbers is a practical Moz alternative that costs nothing.
Free MozBar alternative — the Chrome extension
MozBar is a popular Chrome extension that overlays Domain Authority, Page Authority and link data directly on Google search results. It requires a free Moz account to activate, and the free tier limits you to a handful of queries a day — full access needs Moz Pro.
The KeywordNumbers Chrome extension takes a different approach: it shows estimated search-volume numbers directly on Google and YouTube results as you browse, with no sign-up at all. It does not show DA/PA (those are Moz-proprietary metrics), but for quickly sizing up keyword demand while you search, it is an instant, free MozBar alternative.
Install it, search as normal, and the volume data appears alongside every result — no login, no daily limit, no card.
Common questions
Is there a free alternative to Semrush and Ahrefs?
Yes — KeywordNumbers gives you dozens of free SEO tools covering keyword search volume, research, difficulty, technical checks and YouTube tools, with no sign-up, no card and no monthly fee. It handles many of the everyday jobs people open Semrush or Ahrefs for.
Do I need an account or card to use it?
No. Every tool works straight away in your browser — no login, no card, and no daily search limits.
What do the paid platforms do that you do not?
They hold enormous historical backlink indexes, daily rank-tracking dashboards and enterprise reporting that a free tool does not try to match. For everything else, KeywordNumbers is a fast, free option.
Is there a free MozBar alternative?
MozBar is a Chrome extension that overlays SEO metrics on Google results. For a free, no-sign-up in-browser option, the KeywordNumbers extension shows estimated search volume directly on Google and YouTube results, and the site adds dozens of free SEO tools on top.
Get the free Chrome extensionIs it really free forever?
Yes. There is no trial clock and no push to a paid tier — it is supported by light advertising and optional donations rather than subscriptions.
What is the best free Moz alternative?
For keyword research, on-page checks and technical SEO audits, KeywordNumbers offers a free alternative to Moz Pro with dozens of tools, no account required and no daily limits. You miss Moz's Domain Authority and backlink index, but the core everyday SEO jobs are covered at no cost.
Try the free toolsIs there a free alternative to MozBar?
The KeywordNumbers Chrome extension shows estimated search volume directly on Google and YouTube results as you browse — no sign-up, no daily cap. It does not replicate DA/PA (those are proprietary Moz metrics), but for sizing up keyword demand in real time it is a practical, free MozBar alternative.
Install the free extensionAre there any free SEO tools like Moz?
Yes. KeywordNumbers provides keyword search volume, keyword difficulty, keyword clustering, gap analysis, meta tag checks, SERP previews, PageSpeed analysis and more — all free, all in the browser, with no sign-up. It covers many of the same tasks as Moz Pro without the monthly subscription.
Is there a Mangools alternative that is completely free?
Mangools (KWFinder) offers a limited free plan with a handful of monthly lookups. KeywordNumbers has no monthly cap — use the keyword research, difficulty and clustering tools as often as you like, for free.
Try the free tools now
No sign-up, no card, no limits. Start with a keyword or browse all dozens of tools.