Finding the App/Bundle ID for iOS

Name: Hillrom Corporate Headquarters
Address: 130 E. Randolph St., Suite 1000, Chicago, IL, 60601, USA

Find the app online (Google for the iTunes link). For this example we use Apple Pages: https://itunes.apple.com/app/pages/id361309726?mt=8.
Copy the number after the id in the URL. (Here: 361309726).
Open https://itunes.apple.com/lookup?id=361309726 where you replace the ID with the one you looked up.
Search the output for "bundleID". In this example it looks like this (next to a bunch of other data): "bundleId":"com.apple.Pages". So for Apple, the Bundle ID is com.apple.Pages.