---
title: sourceAppVersion
framework: networkextension
role: symbol
role_heading: Instance Property
path: networkextension/nefilterflow/sourceappversion
---

# sourceAppVersion

The short version string of the app that is the source of the flow.

## Declaration

```swift
var sourceAppVersion: String? { get }
```

## Discussion

Discussion This property is nil if the app info is unavailable.

## See Also

### Source app identification

- [sourceAppUniqueIdentifier](networkextension/nefilterflow/sourceappuniqueidentifier.md)
- [sourceAppIdentifier](networkextension/nefilterflow/sourceappidentifier.md)
- [sourceAppAuditToken](networkextension/nefilterflow/sourceappaudittoken.md)
- [sourceProcessAuditToken](networkextension/nefilterflow/sourceprocessaudittoken.md)