DiagnoSEO review (2026): is it worth $9 a month per user?
Credit-based SEO toolkit with audits, keyword tools and AI writing
DiagnoSEO report card
Good · out of 4.0 · graded Oct 23, 2026
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.
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 DiagnoSEO 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
Why DiagnoSEO gets a 2.6
Five grades, each with its reason. The GPA is their average: an A is 4 points, an F is none.
- AValue for moneyBasic 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.
- CFree plan and trialNo 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.
- CFeaturesPage 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.
- CEase of useNo 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.
- BPlatforms and integrationsWeb plus a WordPress plugin, connected to Search Console, with an API on Enterprise. No desktop or phone app.
What these grades rest on. 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. How we review and grade.
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<a href="https://toolgpa.com/tools/diagnoseo#review"><img src="https://toolgpa.com/badge/diagnoseo.svg" alt="DiagnoSEO: 2.6 GPA on ToolGPA" width="196" height="56"></a>Where DiagnoSEO stands among SEO tools
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, level with 7
- CFree plan and trialAbove 14 of 64, level with 44
- CFeaturesAbove 0 of 64, level with 42
- CEase of useAbove 0 of 64, level with 60
- BPlatforms and integrationsAbove 15 of 64, level with 49
Price against what you get
Each dot is one of 57 SEO tools. Further left costs less, and higher up scores better on features, ease of use and platforms. Point at a dot to see which tool it is.
Features, ease of use and platforms, averaged
What paid plans start at, a month (each step along is roughly double) →
- The best score at each price
- Has a free plan
- No free plan
Keep DiagnoSEO, or make your own?
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.
What is DiagnoSEO?
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.
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.
Key features
- 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.
DiagnoSEO pricing
As of Oct 23, 2026, DiagnoSEO is a paid product with a free trial, starting at $9 per user / month, billed monthly.
- Starts at
- $9 per user / month, billed monthly
- Free plan
- None
- Free trial
- 7-day free trial of the Basic plan; the Advanced plan can be tried for $7
| Plan | Price | What you get |
|---|---|---|
| Basic | $9per 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 | $19per 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 | $39per 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 | $129per 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. |
Read from diagnoseo.com on Oct 23, 2026. Prices change, so confirm with DiagnoSEO before you buy.
Ways to pay less
- Annual discountTwo 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.com - Other savings10% 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
Works with
DiagnoSEO alternatives
- DiagnoSEO vs SEOptimer
Free plan · from $21.75/mo
- DiagnoSEO vs Seobility
Free plan · from $69.90/mo
- DiagnoSEO vs SE Ranking
Free trial · from $103.20/mo
- DiagnoSEO vs Semrush
Free plan · from $117.33/mo
- DiagnoSEO vs NeuronWriter
Free trial · from $19/mo
Common questions
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.
Sources for this page
The prices, plans, platforms and features above were read from these pages on Oct 23, 2026.