You can view the history of SERP lookups by clicking on the “Clock' button on the SERP Results page.
Thе slideout with the search history list will open on the left.
The Search History will contain the list of keywords that have been previously analyzed in your SERP Checker.
Each search in the list will display:
Keyword SEO Difficulty score
Clicking on the “Clear History“ button will erase the history.
If you are not using seobase yet and want to check out how SERP Checker works, follow this link here and sign up: https://app.seobase.com/signup