Cheapest SEO tools that still answer a real question, compared

What the cheapest honest stack costs, where paying nothing stops working, and why the discount routes that look cheapest are the ones to read the terms on.

Published by AI Knows Us · Updated 21 October 2026

The cheapest SEO stack that answers real questions costs nothing, and it is not a compromise for a small site. Search Console, PageSpeed Insights, the Rich Results Test, a free desktop crawl and Keyword Planner cover indexing, speed, markup, structure and sizing between them. The question worth asking is not how to get tools for free but which single paid thing to add first, and the answer is the same for almost everybody.

The criterion on this page: cost per question answered, judged against the free alternative. A tool is cheap when it answers a question nothing free can answer. A tool is expensive at any price when it answers a question Search Console already answered.

The free tier, and the published limit on each part of it

QuestionFree answerWhere it stops
Is my site indexed and what for?Search Console, free for any property you can verifyIt reports your property only, and its documented search types are web, image, video and news.
What is broken across my site?Screaming Frog free version500 URLs in a single crawl, published, with saved crawls, configuration, JavaScript rendering and the API integrations behind the licence.
Is the page fast?PageSpeed Insights and LighthouseNothing, for one URL at a time. Run it on templates rather than only the homepage.
Is my markup valid?Rich Results Test and the Schema Markup ValidatorNothing, and it is tested on the live URL.
How big is this phrase?Keyword PlannerOne grouped figure per normalised set, which means never add the phrasings inside a group.
Who links to my competitor?Nothing free answers thisThis is the one question that requires paying somebody, because it requires their crawl of the whole web.

The first paid thing to buy, and why it is that one

A third party index, bought for one month rather than a year, used in a concentrated week. Everything else on the list above is free forever and genuinely sufficient; competitor link and keyword data is the only gap that money closes. Buy it, extract what you need about your three real competitors, write the plan, and then decide whether a second month would tell you anything new. For many small businesses it would not.

The second purchase, if you publish weekly, is a content optimiser, because the terms and subtopics common to the ranking pages save a real hour per article. The third purchase, for a site above a few thousand URLs, is scheduled crawling, because a crawl you have to remember is not a process.

The discount routes, and the one to read carefully

There are four ways people make these tools cheaper and they are not equally safe. Annual billing is published by most vendors and is simply a discount for commitment. A free tier, as above, is the vendor's own product decision and is entirely legitimate to live inside. A one month concentrated subscription is the best value route in this whole subject and nobody advertises it, because it is just paying for one month.

The fourth is a shared or group buy account, and it is the one to read the terms on. Those arrangements usually sit against the vendor's own terms of service, which is a contractual exposure rather than a bargain, and the account can stop working at a moment that is not of your choosing. The honest version of the same saving is almost always the single concentrated month.

The cheapest check in this entire subject, which is free and nobody runs it

Ask the question your best customer would ask, in ChatGPT, Gemini, Perplexity, Claude and Google's AI Overviews, leaving your own name out so you do not lead the answer, and write down which businesses get named. It costs five minutes and it answers something none of the tools above report, because the answer is composed for each asker rather than stored anywhere a crawler can reach.

If the answer is stable and you are not in it, that is the finding, and it is free. AI Knows Us is the version that repeats and keeps the record, and our pricing page publishes a free scan on your own domain as the entry point, along with the arithmetic: one credit is one buyer question on one app once, most checks cost one credit, a Claude check costs three because Claude costs more to run, and the lanes start at Rs 4,999 a month with a managed option quoted separately at a three month minimum. We sell nothing else in the tables above, so if you are shopping for a cheap crawler or a cheap keyword tool the free picks are your answer and we are not in the comparison. Ahrefs reads more of the assistant surface than we do, including AI Mode and Copilot which we do not read at all, and publishes its own cost of 8 checks per update for a Claude check, which is the kind of number worth comparing precisely because both vendors publish it.

On the group buy question specifically, the terms are worth reading before the saving is banked, and there are cheaper routes that do not carry the same exposure: what a Semrush group buy is, what the terms of service say, and the cheaper routes. On 21 October 2026 we counted durable inbound links across 1,655 tracked pages on this site and 696 of them had none at all; that page was one, at 590 searches a month.

What people ask when looking for cheap SEO tools

What is the cheapest way to do SEO properly?

Free tools for the technical work, one concentrated month of a paid index for the competitive work, and your own time reading the pages that outrank you. That third item is free and it is the one most people skip.

Is a cheap SEO tool worse than an expensive one?

For technical checks, no. A crawler either finds a broken link or it does not. Price buys scale, history and somebody else's data, which is why cheap is fine until one of those three becomes the question.

Are lifetime deals on SEO tools worth it?

Only if the tool does one job you do weekly, and only if you would have paid monthly for it. A lifetime licence for a tool you open twice is not cheap, it is a sunk cost with a nice label.

Can I cancel after one month?

Usually yes, and the cancellation route is a fair thing to check on the vendor's page before you start rather than after. Vendors that publish the cancellation process are telling you something useful about themselves.

What is the cheapest way to check AI visibility?

By hand, in the apps, for nothing. Ask the buyer question in each one, record the names, repeat it in a fortnight. Buy a tool when you need it to happen on a schedule and to keep the record for you.

Read next

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