Features
Flatline SEO checks 30+ signals across 7 categories: Performance, On-page SEO, Mobile, Security, Social, Crawlability, and Structured Data. Every plan includes all categories, plain-English findings sorted by severity, shareable report URLs, and a Visibility Score from 0 to 100. Paid plans add score history, alerts, branded reports, and multi-site tracking.
Run a free auditFlatline audits 7 categories: Performance, On-page, Mobile, Security, Social, Crawlability, and Schema. All generate a Visibility Score 0 to 100. Free tier covers all categories with 2 findings; Paid plans unlock history tracking, keyword rank monitoring, competitor benchmarking, and branded reports.
7
Audit categories
30+
Signals checked
<15s
Time to score
Free
No card needed
Every plan includes all seven audit categories. Paid tiers add history, alerts, and team features.
One number that summarises your online presence. Weighted across performance, SEO basics, mobile-friendliness, structured data, and security.
Every audit returns 5 to 6 findings explained the way you would explain them to a mate, not the way a consultant would invoice for them.
We test the mobile version of your site by default. That is how 60%+ of your visitors experience it.
Every audit gets its own URL. Send it to your developer, your team, or keep it as your baseline to measure improvement.
Re-audit weekly or monthly. Watch your score climb. Spot regressions the day they happen.
If your score drops more than 5 points between audits, you get an email. Catch broken changes before users do.
All data in London (eu-west-2). Right to erasure honoured within 30 days. No third-country transfers.
Add your logo and colours to exported reports. Send them to clients as your own work product.
See if ChatGPT, Claude, and Perplexity can find your business. We check your robots.txt AI bot rules, schema markup, content structure, and give you an AI Readiness Score with a fix playbook. No competitor offers this for free.
Honest feature-by-feature breakdown against the biggest names. See full WooRank comparison
| Feature | Flatline SEO | WooRank | SEOptimer | Semrush |
|---|---|---|---|---|
| Time to first score | 15 seconds | ~30 seconds | ~20 seconds | N/A |
| Plain-English findings | Yes | Partial | No | No |
| Free tier | 1 audit/month | 1 review | Limited | 7-day trial |
| Cheapest paid plan | From £29/mo | ~$65/mo | ~$15/mo | ~$100/mo |
| Email support (<24h) | Yes | Yes | Yes | Yes |
| Mobile-first default | Yes | Yes | Yes | Optional |
| Score-drop alerts | Yes | Enterprise | No | Yes |
| White-label reports | Agency plan | Sales plan | Yes | Yes |
| AI Visibility Check | Free | No | No | $120/mo add-on |
0 to 40 means critical gaps. 41 to 70 means room to improve. 71 to 100 means strong foundations.
Critical findings cost you customers. Warnings are worth fixing next. Tips are nice-to-haves.
Every report has a shareable URL. Copy it, send it, use it as a brief.
Fix the top issue, run another audit, and watch the score move. That feedback loop is the whole point.
Every tier builds on the one below. Free gives you the score. Starter adds depth. Pro adds monitoring. Agency adds white-label.
Free
$0
Starter
$37/mo
Pro
$100/mo
Agency
$253/mo
Yes. Pro plans and above include weekly automatic re-audits. You get an email when the score changes.
Yes. Every report has a Download as PDF button. Pro plans and above include branded exports with your logo.
Yes. Structured data is one of the seven audit categories. We check for LocalBusiness, Organization, BreadcrumbList, and more.
All seven categories, a full findings list, and a shareable report URL. One audit per month, no card required.
Yes. Pro plans and above send email alerts when your score drops more than 5 points between audits.
Run a free audit on any public URL. No signup, no card. 15 seconds later you will have a score and a clear fix list.
Free SEO audit in 15 seconds
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