Comparison · 7-min read
We tested the top 5 tools and compared them on speed, price, features, and plain English. Here is the honest breakdown.
Run a free audit5
Tools tested
£29
Flatline entry price
vs £65+ average
<15s
Flatline audit time
7
Categories checked
An honest side-by-side. We win on some things, lose on others. The table speaks for itself.
| Feature | Flatline SEO | WooRank | SEOptimer | Semrush | BrightLocal |
|---|---|---|---|---|---|
| Free tier | 1 audit/mo forever | 1 review | Limited | 7-day trial | 14-day trial |
| Cheapest paid plan | £29/mo | ~£65/mo | ~£15/mo | ~£100/mo | ~£25/mo |
| Time to first score | 15 seconds | ~30 seconds | ~20 seconds | N/A | ~45 seconds |
| Plain-English findings | Yes | Partial | No | No | Partial |
| Mobile-first default | Yes | Yes | Yes | Optional | No |
| Score-drop alerts | Starter+ | Enterprise | No | Yes | Yes |
| UK-based support | Yes | No | No | No | No |
| White-label reports | Agency plan | Sales plan | Yes | Yes | Yes |
| Local SEO focus | Core purpose | One feature | One feature | Add-on | Core purpose |
Prices approximate, converted to GBP. Checked April 2026. See each tool's pricing page for current rates.
We built Flatline specifically for the businesses that the big tools forgot.
Semrush and WooRank are generalist tools with local SEO as an afterthought. Flatline is purpose-built for local businesses and the agencies that serve them.
Your plumber does not know what 'Core Web Vitals' means. Our findings explain what is broken and why it matters, in words anyone can act on.
£29 a month, cancel anytime. We do not hide the cancel button, throttle features during trials, or ask you to call sales to downgrade.
"WooRank is comprehensive but their dashboard has not changed since 2018. Flatline reads like a 2026 product. The speed difference alone justifies the switch."
Belfast SEO consultant, March 2026
Free, under £50, £50 to £100, or £100+. That alone eliminates half the options.
Score history? Alerts? White-label? Multi-site? Write down what matters before comparing.
Most tools offer some kind of free check. Run the same URL through each one and compare the output.
Can you export your data? Will you lose audit history? Flatline lets you download reports as PDF at any time.
On core audit depth, yes. WooRank has more features around keyword tracking and competitor monitoring. But for audit speed and plain-English output, Flatline leads.
Yes. Many agencies use Flatline for quick audits and client reports, alongside a tool like Semrush for deeper keyword research.
Semrush is a full marketing platform (£100+/mo). Flatline is a focused SEO audit tool (£29/mo). If you only need audits and tracking, Flatline does more for less.
Run a free Flatline audit on the same URL. Compare the output side-by-side. If you get more actionable findings for less money, the answer is clear.
SEOptimer offers 60+ micro-tools (meta tag generators, heading checkers). Flatline focuses on one comprehensive audit. If you need a toolkit, SEOptimer has breadth. If you need depth, Flatline has it.
Run a free audit and compare the output to whatever you are using today. 15 seconds, no card, no signup.