Question
We use Segment to track users on our web application and are developing a mobile app. If a user logs into both the web application and the mobile app during the same month, will they count as one or two MTUs?
Product
Twilio Segment
Environment
Segment Console
Answer
In most cases, the user will count as one Monthly Tracked User (MTU), provided they are identified consistently across both platforms.
Segment calculates MTUs based on the number of unique users who send data through Segment during a calendar month. A user can interact with your web application, mobile application, or other platforms and still count as a single MTU if Segment can identify them as the same individual.
Example
A user:
- Logs into your web application and is identified as
user_123. - Logs into your mobile application and is also identified as
user_123.
Because the same identifier is used across both platforms, Segment recognizes these activities as belonging to the same user, and the user is typically counted as one MTU for that month.
Additional Information
To ensure accurate MTU counting:
- Use a consistent user identifier across all platforms.
- Call
identify()after authentication. - Avoid assigning different user IDs to the same individual on different platforms.