# User Engagement Histogram

## Usage Distribution Histogram

 - [POST /v3/reporting/engagement/usageDistribution/{product_id}](https://rui-api.redocly.app/v3_api_redocly/user-engagement-histogram/paths/~1v3~1reporting~1engagement~1usagedistribution~1%7Bproduct_id%7D/post.md): The User Distribution Histogram report consists of three histograms which show the following metrics:
- Active Days—The number of days clients were active within the specified date range.
- Sessions—The number of times users launched your application.
- Runtime—The total amount of time in hours users spent interacting with your application.