What report compares metrics based on user acquisition date over a series of weeks?
- Users Flow report
- Active Users report
- Cohort Analysis report
- User Explorer report
Cohort analysis helps you understand the behavior of component groups of users apart from your user population as a whole. Examples of how you can use cohort analysis include to see how the behavior and performance of individual.
Read more here: https://support.google.com/analytics/answer/6158745