DefiniteSEO
9.0#1 in seo toolsFrom $4.99 a monthFree planAndroidiOSWebAPI
VisitDefiniteSEO vs SEM Optimiser
SEM Optimiser
6.7#131 in seo toolsFrom $49 a yearFree planAPI
VisitWhat both publish
| Fact | DefiniteSEO | SEM Optimiser |
|---|---|---|
| API access | The maker says users do not need their own AI account or API keys; the documentation references plugin REST routes rather than a separately documented public SaaS API. | Yes |
| Free plan | Yes | Yes |
| Paid from | 4.99 | 49 |
DefiniteSEO plans
- Pro$598.80 a year
- WordPress Plugin — FreeFree
- SEO Audit SaaS — FreeFree
- Free (SEO Audit SaaS)Free
- Free (WordPress Plugin)Free
- Solo$4.99 a month
SEM Optimiser plans
- FreeFree
- Marketing$49 a year
- Management$99 a year
- Enterprise—
Pick DefiniteSEO if…
DefiniteSEO suits website owners, WordPress users, SEO professionals, and agencies seeking audits or WordPress SEO automation. Its free plugin and audit plan offer different starting points.
Pick SEM Optimiser if…
You want what its maker publishes above — check its page for the details.