---
title: HKUpdateFrequency.hourly
framework: healthkit
role: symbol
role_heading: Case
path: healthkit/hkupdatefrequency/hourly
---

# HKUpdateFrequency.hourly

The system launches your app at most once an hour in response to changes.

## Declaration

```swift
case hourly
```

## See Also

### Constants

- [HKUpdateFrequency.immediate](healthkit/hkupdatefrequency/immediate.md)
- [HKUpdateFrequency.daily](healthkit/hkupdatefrequency/daily.md)
- [HKUpdateFrequency.weekly](healthkit/hkupdatefrequency/weekly.md)