Semust API vs SEOTesting
| Semust API | SEOTesting | |
|---|---|---|
| Free plan | Yes | No |
| Free trial | Yes | No |
| Paid from | $19/mo | — |
| Open source | No | No |
| Platforms | api, extension, Web | — |
| Free plan | Yes | No |
| Paid from | 19 /mo | — |
| Experiment method | time_based | mixed |
| Organic traffic impact | Yes | Yes |
| Ranking impact | Yes | Yes |
| Search data source | search_console | mixed |
| Supported page types | articles and entire sites | single pages, groups of pages, URL switches |
Both are listed in Best SEO Testing Software. On Samsung Mobile US Press, Semust API scores higher on our published basis.