---
title: progress
framework: healthkit
role: symbol
role_heading: Instance Property
path: healthkit/hkattachmentdatareader/progress
---

# progress

An object you can use to track the progress while reading an attachment’s data.

## Declaration

```swift
var progress: Progress { get }
```

## See Also

### Reading attachment data

- [data](healthkit/hkattachmentdatareader/data.md)
- [bytes](healthkit/hkattachmentdatareader/bytes.md)