get https://api.similarweb.com/v4/data-ai/retention-d30/describe
Returns the countries, date ranges, and granularity available for app retention.
Price: querying this endpoint does not cost any hits.
Premium Endpoint
This endpoint is available to customers with access to Similarweb App Intelligence Premium (powered by data.ai) add-on in their subscription. Reach out to your Account Manager for more information.