The audit tools all grade your page. Only one of them will go and submit it to thirty directories while you watch.
15 August 2026 · Edited by Spark
Feature comparison
| Feature | ||||
|---|---|---|---|---|
| Starting price | Free | From $49/mo | Starting at $23 per month | From $49/mo |
| Free tier | ✓ | ✓ | ✓ | ✓ |
| Documentation | ✓ | ✓ | ✓ | ✓ |
| Community | Discord | – | – | – |
| Direct support | Contact form | Contact form | ✓ | ✓ |
| MCP tools | ✓ | – | ✗ | ✓ |
| Chrome extension | ✓ | ✓ | ✗ | ✗ |
| User friendliness | ✓ | ● Limited | ● Limited | ● Limited |
| Feature richness |  Absolute beast | Rich | Rich | Rich |
Key Insights
The incumbents audit and report. Sellular audits, then does the submitting, and an assistant can drive the whole thing without you opening the dashboard.
The short version
All four tell you why a page is invisible to search. The difference is what happens next. Sellular carries a directory kit, a submission tracker and a badge, so the finding turns into a listing. Semrush and SE Ranking are research suites built for agencies reporting to clients, and both are overkill for one person with one app. SEOptimer sits in the middle: a fast audit, a tidy PDF, and nothing that follows through.
What actually separates them
The split is whether an AI assistant can do the work or only read about it. Sellular ships MCP tools, so an assistant scans a domain, pulls the visibility score, checks a product is ready to submit, records each directory submission as it lands. Generates the llms.txt file that tells other assistants what your product is. That turns a Saturday of copying the same tagline into thirty forms into a conversation. The audit suites hand back a report and leave the doing to you.
What you get free
All four let you start for nothing, but they give away different things. Sellular's free tier covers the audit, the directory kit and one tracked product. Semrush and SE Ranking cap free accounts at a handful of daily lookups, which runs out in an afternoon. SEOptimer's free audit is a single page report with the fixes behind the paid plan.
Strengths and weaknesses
SellularBoost SaaS visibilityVerdict
Boost SaaS visibility
Sellular wins for an indie maker who wants the listings done, not just the score explained.
Who should pick what
Someone shipping their own app and dreading the launch admin should pick Sellular and let the assistant file the listings. An agency reporting rankings to ten clients every month should pick Semrush. A freelancer who sells audits as a deliverable should pick SEOptimer for the white label reports. SE Ranking suits a small agency that wants most of Semrush for less.