About HellSEO

HellSEO is built and run by one person, not an agency or a team of consultants. It exists because SEO tools kept handing back long reports and no way to actually fix anything without either hiring an agency or learning SEO yourself. So I built a tool that scores your site across three fronts — classic Google SEO, AI answer engines (AEO), and generative search / AI crawlers (GEO) — and gives you the exact code to paste, not just a list of problems.

Why one person can build this

HellSEO isn't trying to replace a full agency retainer. It automates the part of an audit that's mechanical — checking tags, schema, crawler access, heading structure — and hands you working code for what it finds. That's a narrower, more honest scope than “we'll manage your entire SEO strategy,” and it's exactly why one person can maintain it without a team.

Who is MJM DEV?

MJM DEV is the name I build and publish my independent software under. I'm a solo developer, and HellSEO is one of several products I run myself: alongside it there is SMBkits (free calculators and tools for small business owners), an automated sports-analytics publisher, a YouTube growth tool, and a Korean-learning video pipeline. I like building things end to end, from the idea and the code to the support inbox.

Keeping everything under one name also keeps accountability in one place. When you buy HellSEO credits, the seller on your receipt is MJM DEV, the payment is processed by Paddle, and the charge on your card statement appears as “PADDLE.NET* HELLSEO”. Questions about an account, a purchase or a refund go to the email on the contact page, and the terms are in the terms and refund policy.

What we check

Every audit scores 18 items across SEO, AEO, and GEO: indexability, title and meta tags, Core Web Vitals, heading structure, FAQ and schema markup, AI crawler access, backlink authority, and more. See the full breakdown on the report page.

Free tools

We also publish a set of single-purpose free tools — no sign-up, no cost — for the checks that are useful on their own, like an AI crawler checker or an llms.txt generator.

Get in touch

Questions, bug reports, or feedback — see the contact page.