Description: Bundlr is a small app for designers. Bundlr makes it simple to lookup app bundle ids without having to download the app from the AppStore. This is a very limited initial release so don't expect much more than bare bones. Currently it only works for the US appstore and only iphone apps. I'll add in iPad apps and changing the appstore country. Also more awesome features will get added in the near future. Step 1: Add https://repo.cpdigitaldarkroom.com/to your Cydia. Step 2: Search and install "Bundlr" from the source above. Step 3: Open the new Bundlr app on your SpringBoard and search for any app and it will show you the App's full name along with the Bundle ID. Tapping on the listed apps will copy the bundle id.
You might also be interested in this alternative way: http://iosgods.com/topic/6282-how-to-find-an-apps-bundle-id-without-installing-the-ipa/