AppActivityViewer helps to inspect the iOS 15 App Activity Data easily on device.
Choose App Activity at share sheet after click Save App Activity, and go to the App Activity App to view the result.
Support search for App bundle ID.
Why this App
In iOS 15 and iPadOS 15 or later, users can view a summary of when apps access user data and sensors, and when apps or websites that users visit within apps contact network domains. Apple article link.
The report has lots of json, not easy to read directly on iPhone.