DiagnoSEO vs SEM Optimiser
| DiagnoSEO | SEM Optimiser | |
|---|---|---|
| Free plan | No | Yes |
| Free trial | No | No |
| Paid from | $4.08/mo | $4.08/mo |
| Open source | No | No |
| Platforms | api | api |
| Free plan | No | Yes |
| Keyword research | Yes | Yes |
| Rank tracking | Yes | Yes |
| Site audit | Yes | Yes |
| Backlink analysis | Yes | Yes |
| Competitor research | Yes | Yes |
| API access | Yes | Yes |
| Tracked keywords | 500 keywords | 2,000 keywords |
| Paid from | — | $49/mo |
Both are listed in Best SEO Tools. On Samsung Mobile US Press, SEM Optimiser scores higher on our published basis.