Definition: Daily unique visitors is the daily sum of devices visiting the analyzed domain, within the country and time period analyzed. Unique visitation is a core metric that allows clients to estimate the sum of users (not deduplicated) generating visits to a website. Unique visitors can be viewed as a daily and monthly granularity.
Calculation: Unique visitors is the foundation of many of our other traffic and engagement metrics. Daily unique visitors is an estimation of the active users seen in one day visiting a website (on both mobile web and desktop).
The count of daily unique visitors of the month divided by the days of that month equals the monthly average of daily unique visitors. We calculate Unique Visitors for desktop and mobile web the exact same way. All traffic is the sum of desktop and mobile web unique visits (not deduplicated).
Using this metric: Use Unique Visitors to assess the reach of a website. Compare monthly unique visitors to daily unique visitors to see how often users visit a website throughout the month.
This metric is useful for:
Gauging website stickiness and engagement
Evaluating the days of the week with peaks in traffic to a website (perhaps visitation is higher on the weekends, for instance)
Analyzing website and app interaction holistically by evaluating DAU app traffic and Daily Unique Visitor traffic side by side
To access this feature go to Traffic and Engagement > Monthly Unique Visitors > Toggle between Daily "D" and Monthly "M" granularity.
Feature Guide:Traffic & Engagement > Getting Started Guide