The DiagnoSEO Insider’s Guide
Everything we know about DiagnoSEO in one document: what it costs, its grades, getting a refund, getting help and what else to look at. Read it here, or keep a copy.
DiagnoSEO
The Insider’s Guide
Credit-based SEO toolkit with audits, keyword tools and AI writing
Every plan, grade, refund rule and rival among SEO tools, read from DiagnoSEO’s own pages.
Made by DiagnoSEO · checked Oct 23, 2026 · toolgpa.com
Contents
- 01WelcomeWhat it is, who it suits, its grades and the ten things to know first
- 02What it costsEvery plan, the free plan, ways to pay less and how prices have moved
- 03What it doesIts main features, where it runs, what it works with and who makes it
- 04Where it standsIts grades against its category, and whether to keep it or make your own
- 05The alternativesThe tools it is most often weighed against, side by side
- 06Quick answersThe questions people ask about it, each answered in a line or two
- 07About ToolGPAWho made this guide, what else is on the site, and how to cite it
ToolGPA put this guide together from DiagnoSEO’s own pages, its app-store listings and our grades. Every fact in it is on DiagnoSEO’s page too, where it is kept up to date. Checked Oct 23, 2026.
Part 01 · Overview
Welcome
What it is, who it suits, its grades and the ten things to know first
2.6
GPA, above 56 of the 64 other SEO tools we grade
DiagnoSEO is a web-based SEO toolkit with page audits, a site crawler, SERP and competitor analysis, keyword research, a backlink checker and AI article writing, alongside a WordPress SEO plugin of the same name. Plans are priced per user and come with a set number of credits that each tool spends when it is used.
To get you started, here are 9 things to know about DiagnoSEO, taken from its own pages and our grades.
- 1
Best for credit-based SEO tools with a WordPress plugin
DiagnoSEO is a toolkit of page audits, a site crawler, SERP and keyword research, a backlink checker and AI article writing, with its WordPress plugin included, from $9 per user a month.
- 2
Paid plans start at $9 a month for each person
As its pricing page puts it: $9 per user / month, billed monthly.
- 3
You can try it first
7-day free trial of the Basic plan; the Advanced plan can be tried for $7
- 4
It runs on Web
Web.
- 5
SEO audit and site crawler
Checks a page against more than 200 on-page factors, with an advanced audit at 3 credits, and crawls whole sites; the pages allowed per crawl rise with the plan.
- 6
SERP Analyzer and visibility checker
The SERP Analyzer compares the pages ranking for a keyword and gives AI tips on what to change; the Website Visibility Checker reports a domain's top 50 or top 1,000 keywords.
- 7
Keyword research
Keyword ideas from live Google autocomplete with search volume and intent, related keywords, questions, People Also Ask, a topical map and bulk volume checks of 1,000 keywords.
- 8
A 2.6 GPA, above 56 of 64
That is against the other SEO tools we grade, on value, the free plan, features, ease of use and platforms.
- 9
Keep it
To replace DiagnoSEO you would be making search volumes for millions of keywords, gathered and kept up to date. That is not a weekend's work, with an AI app builder or without one.
DiagnoSEO at a glance
- Pricing
- Free trial, from $9 per user / month, billed monthly
- Free plan
- No
- Free trial
- 7-day free trial of the Basic plan; the Advanced plan can be tried for $7
- Runs on
- Web
- Made by
- DiagnoSEO, since 2016
- Category
- SEO Tools
- Our grade
- 2.6 GPA, good
The report card
Best for credit-based SEO tools with a WordPress plugin
DiagnoSEO is a toolkit of page audits, a site crawler, SERP and keyword research, a backlink checker and AI article writing, with its WordPress plugin included, from $9 per user a month. But every tool spends credits and Basic gets 60 a month, rank tracking and the API wait for Enterprise at $129, and monthly and annual plans list different limits.
| Subject | Grade | Comment |
|---|---|---|
| Value for money | A | Basic is $9 per user a month, under 60% of this category's cheaper quarter, for 20 tools, 60 credits and 5 projects. The catch: a keyword ideas report is 10 credits, and rank tracking needs Enterprise at $129. |
| Free plan and trial | C | No free plan, but a 7-day free trial of Basic, and Advanced can be tried for $7. Refunds cover a first purchase only, within 7 days. |
| Features | C | Page audits, a site crawler, a SERP analyzer, keyword research, a backlink checker, a content editor, AI articles and a WordPress plugin. The gap the listing names: rank tracking only comes with Enterprise. |
| Ease of use | C | No rating on record. Each tool spends a different number of credits, from 1 for an audit to 10 for a GPT-4o article, so there's a meter to keep an eye on. |
| Platforms and integrations | B | Web plus a WordPress plugin, connected to Search Console, with an API on Enterprise. No desktop or phone app. |
An A is worth 4 points, a B 3, a C 2, a D 1 and an F nothing. The GPA is the average of the five.
Who DiagnoSEO is for
- Fits if you run WordPress sites and want the DiagnoSEO Pro plugin with your SEO tools
- Works for freelancers running audits and keyword checks now and then on a small budget
Who it is not for
- Pricey if you need rank tracking or the API, as both start on Enterprise at $129 per user a month
- Tight if you're on Basic, as 60 credits a month is six keyword ideas reports at 10 credits each
- Watch out: extra credits are $1 per 10, need an active plan and expire after a year
- Watch out: monthly and annual plans list different limits, such as 100 projects monthly but 50 yearly on Pro
- Not for you if you want a free plan, as there's only a 7-day trial and refunds cover a first purchase within 7 days
Good to know
Good for
- Freelancers and small sites wanting many SEO and AI writing tools for under $10 a month
- WordPress site owners who also want the DiagnoSEO Pro plugin
- Agencies running audits and content work across many client projects
Worth knowing
- Tools spend credits per use (an SEO audit 1, a GPT-4o article 10); extra credits cost $1 per 10, need an active plan and expire after a year.
- Rank tracking, API access and the embeddable audit tool come only with Enterprise at $129 per user a month.
- Monthly and annual plans list different limits: Pro has 100 projects monthly but 50 annually, and Enterprise tracks 500 or 5,000 keywords.
- Refunds cover the first purchase only, if asked within 7 days. The WordPress plugin is also sold alone at $49 a year, shown cut from $69.
Part 02 · Pricing
What it costs
Every plan, the free plan, ways to pay less and how prices have moved
$9
A month to start, for each person
DiagnoSEO is a paid product with a free trial, starting at $9 per user / month, billed monthly.
Basic
$9
per user / month, billed monthly
20 tools, 60 credits, 5 projects and the DiagnoSEO Pro WordPress plugin on 5 sites. Has a 7-day free trial.
Advanced
$19
per user / month, billed monthly
30+ tools including the advanced ones, 200 credits, 20 projects and the WordPress plugin on 10 sites. Can be tried for $7.
Pro
$39
per user / month, billed monthly
60+ tools, 400 credits, 100 projects (50 on annual billing), the plugin on unlimited sites and the WordPress theme builder on 30 sites.
Enterprise
$129
per user / month, billed monthly
1,600 credits, 1,000 projects, rank tracking, an embeddable audit tool, custom audits, bulk content generation, API access and dedicated support.
Trying it first
7-day free trial of the Basic plan; the Advanced plan can be tried for $7
Read from diagnoseo.com on Oct 23, 2026.
Ways to pay less
Annual discount
Two months free with annual billing
DiagnoSEO says annual billing saves 16%, or two months free: Basic is $90 per user a year instead of $9 a month.
Stated on diagnoseo.comOther savings
10% off renewals at the regular price
The pricing FAQ says subscriptions renewed at the regular price get a 10% discount, the same on every plan.
Stated on diagnoseo.com
Part 03 · Features
What it does
Its main features, where it runs, what it works with and who makes it
1
Place it runs: Web
Credit-based SEO toolkit with audits, keyword tools and AI writing. Here is what it does, as its own site describes it, and what it covers: public API, long-form writing, keyword research, site audit, backlink analysis, content optimization.
Page audits, a site crawler, a SERP analyzer, keyword research, a backlink checker, a content editor, AI articles and a WordPress plugin.
- SEO audit and site crawler
- Checks a page against more than 200 on-page factors, with an advanced audit at 3 credits, and crawls whole sites; the pages allowed per crawl rise with the plan.
- SERP Analyzer and visibility checker
- The SERP Analyzer compares the pages ranking for a keyword and gives AI tips on what to change; the Website Visibility Checker reports a domain's top 50 or top 1,000 keywords.
- Keyword research
- Keyword ideas from live Google autocomplete with search volume and intent, related keywords, questions, People Also Ask, a topical map and bulk volume checks of 1,000 keywords.
- Content Editor and AI writing
- Semantic keyword recommendations while you write, plus AI articles of up to 5,000 words with GPT-4o mini or GPT-4o, rewriting, outlines, headlines and internal link suggestions.
- Backlink checker
- Lists the linking domains and pages for any site, with broken backlinks, anchor text distribution, link locations and linking TLDs at no extra credit.
- WordPress SEO plugin
- The DiagnoSEO Pro plugin adds AI titles and meta descriptions, schema, content analysis, sitemaps, redirections and internal links to WordPress sites.
Where it runs
- Web
What it works with
- WordPress
- Google Search Console
DiagnoSEO is made by DiagnoSEO, and has been around since 2016.
Part 04 · Standing
Where it stands
Its grades against its category, and whether to keep it or make your own
56/64
Other SEO tools it is graded above
DiagnoSEO's GPA of 2.6 is higher than 56 of the 64 other SEO tools we grade, and level with 4.
It stands best on value for money (A, above 57 of 64) and worst on features (C, above 0).
Its paid plans start at $9 a month for each person, against a middle price of $39 for the category: 1 of the 56 others that charge start lower.
On features, ease of use and platforms it scores 2.3 out of 4. 1 tool scores higher and costs less.
Each grade against the category
Every bar is all 65 SEO tools we grade, cut by the letter each got. DiagnoSEO’s own letter is outlined.
- AValue for moneyAbove 57 of 64
- CFree plan and trialAbove 14 of 64
- CFeaturesAbove 0 of 64
- CEase of useAbove 0 of 64
- BPlatforms and integrationsAbove 15 of 64
Price against what you get
Each dot is one of 57 SEO tools. Further left costs less; higher up scores better on features, ease of use and platforms. DiagnoSEO is the marked dot.
What paid plans start at, a month (each step along is roughly double) →
Keep it, or make your own?
Whether this is something you could build for yourself with an AI app builder, and what you would give up.
Keep it
To replace DiagnoSEO you would be making search volumes for millions of keywords, gathered and kept up to date. That is not a weekend's work, with an AI app builder or without one.
It is one of the better ones too: its GPA of 2.6 is higher than 56 of the 64 other SEO tools we grade. It costs $108 a year.
What you could make
- Long-form writing: an app builder makes this well.
What you could not
- Search volumes for millions of keywords, gathered and kept up to date.
- An index of the links between billions of web pages.
- A crawler that checks every page of a site.
- A score built from what the top results for each keyword cover.
- It is priced for each person, which means accounts and billing for a team.
- It plugs into other products, WordPress and Google Search Console among them, and has an API.
What this rests on. DiagnoSEO’s listing: what it does, where it runs, what it plugs into and what it costs. It is a judgement about the kind of software this is. We have not built a replacement for it, and making your own means looking after it too. How we decide, and every tool’s verdict.
Part 05 · Alternatives
The alternatives
The tools it is most often weighed against, side by side
SEOptimer, Seobility, SE Ranking, Semrush and NeuronWriter
The 5 tools DiagnoSEO is most often weighed against, with where each one differs from it.
- 2.6GPA
SEOptimer
Free plan · from $21.75/mo
SEO audit tool with white-label reports and a lead-generation widget.
- SEOptimer has a free plan. DiagnoSEO does not, though it has a free trial.
- Only SEOptimer lists a browser extension.
- DiagnoSEO also covers long-form writing and content optimization.
- 2.0GPA
Seobility
Free plan · from $69.90/mo
Site audits, rank tracking and backlink monitoring in one web app.
- Seobility has a free plan. DiagnoSEO does not, though it has a free trial.
- DiagnoSEO also covers long-form writing and content optimization.
- Seobility also covers reports and rank tracking.
- 2.2GPA
SE Ranking
Free trial · from $103.20/mo
SEO platform for rank tracking, audits, research and AI visibility.
- DiagnoSEO also covers long-form writing and content optimization.
- SE Ranking also covers reports and rank tracking.
- 2.2GPA
Semrush
Free plan · from $117.33/mo
SEO suite for keyword research, rank tracking and AI search visibility.
- Semrush has a free plan. DiagnoSEO does not, though it has a free trial.
- DiagnoSEO also covers long-form writing and content optimization.
- Semrush also covers reports and rank tracking.
- 2.8GPA
NeuronWriter
Free trial · from $19/mo
Content editor that scores drafts against the pages already ranking.
- Only NeuronWriter lists a browser extension.
- DiagnoSEO also covers keyword research, site audit, backlink analysis and content optimization.
Part 06 · Questions
Quick answers
The questions people ask about it, each answered in a line or two
14
Questions, each answered in a line or two
The short version of everything above, for when you only need the answer. Each one is told in full in its part of the guide.
Is DiagnoSEO free?
No, DiagnoSEO is a paid product, but you can try it first. 7-day free trial of the Basic plan; the Advanced plan can be tried for $7.
How much does DiagnoSEO cost?
DiagnoSEO lists 4 plans. Basic: $9 per user / month, billed monthly.
What platforms does DiagnoSEO work on?
DiagnoSEO is available on Web.
Does DiagnoSEO offer any discounts?
DiagnoSEO publicly lists the following: Two months free with annual billing; 10% off renewals at the regular price.
Does DiagnoSEO have an Android app?
No Android app was listed when its pages were read on Oct 23, 2026. DiagnoSEO is listed for Web.
Does DiagnoSEO have an iPhone app?
No iPhone app was listed when its pages were read on Oct 23, 2026. DiagnoSEO is listed for Web.
Is DiagnoSEO open source?
DiagnoSEO is not described as open source on its own site, as read on Oct 23, 2026.
Does DiagnoSEO have an API?
Yes. DiagnoSEO offers a public API, according to its own site.
What does DiagnoSEO integrate with?
DiagnoSEO's listing names WordPress and Google Search Console. A listing names up to eight integrations, so it may connect to more.
Who makes DiagnoSEO?
DiagnoSEO is made by a company of the same name. It dates from 2016.
What are the alternatives to DiagnoSEO?
The closest alternatives to DiagnoSEO in our directory are SEOptimer, Seobility, SE Ranking, Semrush and NeuronWriter.
How does DiagnoSEO compare with other SEO tools?
DiagnoSEO's GPA of 2.6 is higher than 56 of the 64 other SEO tools we grade, and level with 4.
Is DiagnoSEO good value for money?
ToolGPA grades DiagnoSEO A for value for money. Its paid plans start at $9 a month for each person, against a middle price of $39 for the category: 1 of the 56 others that charge start lower.
Could I make my own version of DiagnoSEO?
To replace DiagnoSEO you would be making search volumes for millions of keywords, gathered and kept up to date.
Where this guide comes from
The prices, plans, platforms and features were read from DiagnoSEO’s own pages on Oct 23, 2026, and the grades were given on Oct 23, 2026. Graded from this listing, whose facts were read from DiagnoSEO's own pages on 23 October 2026. Not based on using the product, and shorter than our full reviews.
Every tool we list gets five grades, A to F, each with its reason, and a GPA that averages them. How each is decided is at toolgpa.com/grades. This guide is ToolGPA’s own work; it is not made, paid for or approved by DiagnoSEO. Prices change, so check diagnoseo.com before you buy.
Part 07 · About
About ToolGPA
Who made this guide, what else is on the site, and how to cite it
3,189
Tools graded, in 94 categories
ToolGPA grades software the way a school report grades a pupil: five subjects, a letter for each with the reason written beside it, and a GPA that averages them. Prices, plans and platforms are read from each maker’s own pages and dated, so you always know how fresh a figure is.
Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. Every tool on the site has a guide like this one, free to download and pass on. It all lives at toolgpa.com.
3,189
tools graded
94
categories
426
price changes on record
579
apps priced in 12 countries
What else is on toolgpa.com
- DiagnoSEO, kept up to dateEverything in this guide, with prices and grades as they are todaytoolgpa.com/tools/diagnoseo
- How grades are givenThe rules behind every letter and every GPAtoolgpa.com/grades
- Value chartsWhat each tool costs against what it scores, for every categorytoolgpa.com/charts
- CompareAny two tools side by side, plan by plantoolgpa.com/compare
- Price changesEvery price rise and cut on record, each with its sourcetoolgpa.com/price-changes
- Prices by countryWhat apps cost on the App Store in 12 countriestoolgpa.com/prices-by-country
- Pay lessEvery public discount: yearly billing, students, nonprofitstoolgpa.com/save
- Keep or makeWhich tools are worth paying for, and which you could build yourselftoolgpa.com/keep-or-make
Scan for the live page
Prices and grades as they are today
Quoting this guide?
Please name ToolGPA and link to the live page, so readers can check the figures for themselves:
ToolGPA, "DiagnoSEO: The Insider's Guide", checked Oct 23, 2026. https://toolgpa.com/tools/diagnoseo
Know someone choosing between SEO tools?
Send them this guide: toolgpa.com/tools/diagnoseo/guide
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See our other guides
The best-graded SEO tools after DiagnoSEO, each with an Insider's Guide of its own.
- SEO Tools Insider's GuideEvery one of the 65 SEO tools we grade, compared
- Rank Math Insider's GuideWordPress SEO plugin for meta tags, schema, sitemaps and rank tracking3.0 GPA
- Keywords Everywhere Insider's GuideBrowser extension that shows search volume on the sites you browse2.8 GPA
- NeuronWriter Insider's GuideContent editor that scores drafts against the pages already ranking2.8 GPA
Choosing software? Every tool graded, every price dated.
Compare tools at toolgpa.com ›Everything in this guide is ToolGPA’s own summary of what DiagnoSEO’s pages, its app-store listings and public reviews said on the dates shown. Grades are our judgement under the rules at toolgpa.com/grades. Every grade, review and ranking on ToolGPA is our own judgement. No company can pay for a grade or change one. DiagnoSEO is a trademark of its owner, and this guide is not made, paid for or approved by DiagnoSEO. Prices and plans change: check diagnoseo.com before you buy.