---
title: notificationUsageByCategory
framework: sensorkit
role: symbol
role_heading: Instance Property
path: sensorkit/srdeviceusagereport/notificationusagebycategory
---

# notificationUsageByCategory

The frequency of notifications per category.

## Declaration

```swift
var notificationUsageByCategory: [SRDeviceUsageReport.CategoryKey : [SRDeviceUsageReport.NotificationUsage]] { get }
```

## Discussion

Discussion The framework interprets the category using the primary genre an app supplies in its iTunesMetadata.plist.

## See Also

### Analyzing Notification Use

- [SRDeviceUsageReport.NotificationUsage](sensorkit/srdeviceusagereport/notificationusage.md)