I took the app for a spin and unfortunately the app is dead. Whenever I tap on the Saved Caches button, the app crashes. The other things seem to work fine. The last cache I saved had a trackable item (travelbug) with it, which may have caused some issue. Cache Page
I'll have to delete the app and download it again. Just letting you know.
Edit: After starting fresh, after adding the same 4 caches in opposite order, this causes the app to crash when trying to access the Saved Caches.
Edit 2: I added a random group of 10, including the cache in the URL above and it didn't have a problem with that.
Edit 3: After removing them all and adding the 4 that I want saved, it got the application to crash with just 3 of the caches saved. (1, 2, 3.) I don't know how useful this information is but maybe it can help you replicate the bug, find out the issue and fix it.
Thanks.