Same site-wide technical crawl and real PageSpeed metrics - battle-tested on our own 10+ production sites, not a weekend project. No desktop install, no annual licence, no subscription. Try it free, then $9-49 one-time only when you need more.
Try it instantly - no signup. The same engine we run on 10+ of our own products.
An honest, side-by-side look. Different tools win at different jobs - here's where each one fits.
| Kalenux SEO Audit | Screaming Frog | Ahrefs / Semrush | |
|---|---|---|---|
| Price | $9-49 one-time | Free to 500 URLs, then ~£199/yr | $100-250+ / month |
| Billing model | One-time credits, never expire | Annual licence | Monthly subscription |
| Site-wide technical crawl | Yes | Yes | Yes |
| 180+ technical checks | Yes | Yes | Yes |
| Real PageSpeed / Core Web Vitals | Yes | Via integration | Yes |
| Setup | Web app, nothing to install | Desktop app + RAM for big sites | Web app |
| Health tracking run-over-run | Yes | Manual | Yes |
| CSV export | Yes | Yes | Yes |
| Keyword research & rank tracking | No (by design) | No | Yes |
| Backlink index | No | No | Yes |
We're a focused technical-audit tool, not a keyword suite. If you want backlinks and keyword research, keep your Ahrefs. If you want fast, cheap, site-wide technical audits you can run on every client - that's us.
You need technical SEO + PageSpeed audits across whole sites, cheaply and often - especially across many client sites - without a monthly bill or a desktop crawler.
You want a deep desktop crawler with very granular configuration and don't mind the annual licence and local RAM for very large sites.
Your core work is keyword research, rank tracking and backlink analysis - the things a broad suite does that a focused audit tool deliberately doesn't.
If you audit client sites, the difference compounds fast.
$129/mo × 12 = $1,548 a year, every year, whether you run 2 audits or 200.
$49 one-time = ~500 small-site audits. Credits never expire. Buy again only when you run out.
Run a full technical audit on every client at onboarding, then re-audit monthly to show progress - for the price of one month of a suite.
Kalenux SEO Audit runs the same kind of site-wide technical crawl that a desktop spider does: broken links, redirects, canonicals, hreflang, structured data and sitemaps, plus real PageSpeed, all from a web dashboard with nothing to install.
The pricing works differently too. Screaming Frog is free to 500 URLs and then needs a yearly licence; Kalenux is free to start and credit packs are $9 to $49 one-time, with no subscription and credits that do not expire.
Ahrefs and Semrush are broad keyword-and-backlink suites at $100 to $250-plus per month. If what you mainly need is technical site-health auditing, Kalenux covers that for $9 to $49 one-time. It is deliberately not a keyword-research suite, and it does not carry a backlink index.
It does not replace Ahrefs or Semrush completely, and we will not pretend otherwise. Those suites are stronger for keyword research, rank tracking and backlink analysis, which are jobs a focused audit tool does not attempt. Many agencies run Kalenux for fast, cheap technical audits across every client and keep a keyword suite for the research side.
Credits are shared across every site in your account and never expire, so a $49 Pro pack covers around 500 small-site audits from one pool. Verify each client domain once, then re-run whenever you like and track health over time per site, which gives you a straightforward record of what you fixed between audits.
Your first full audit is free. After that it's $9-49 one-time, credits never expire. No card to start.
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