I've been using the Groundspeak geocaching app on my iTouch since its inception, but over time as newer versions have been released, it has become more and more frustrating to use. I'm not sure if it's become more bloated and therefore less stable on my 4th generation iPodTouch, or if it is really just geared for use on an iPhone and not so much for off-line use.
Whatever the reason, it has gotten to the point where the app crashes every-time I wake my iTouch from sleep mode, requiring me to relaunch the app each time (which, incidentally, seems to take forever). My other complaint about this app is that it takes too long to scroll through a list of 1,000 caches to pull up a specific cache listing; especially if the cache name happens to begin with a letter near the end of the alphabet.
These ongoing frustrations finally prompted me to look for another solution. And I think I have found it in Geosphere. This app. overcomes all the problems with the gc.com app listed above as it starts up instantly, it never crashes, and it has a great search and scroll function so I can pull up any cache that I want, instantly.
Not only that, but it is incredibly feature-rich, sporting much more functionality than the gc.com iOS app. For example, you can load caches onto your device from a variety of sources including your own pocket queries as well as from email messages containing gpx files and from your dropbox account, to name a few. It also has an impressive search, filter and sort tool that allows you to pull up any cache or caches that you could want.
This powerful little app. has so many features and so much functionality, it's impossible to list them all here. So instead, here's the Geosphere quick start video that'll give you a taste of the power of this $7.99 app:
I've been using it for a few days now, and am completely sold. Unless something completely unexpected happens, I don't see myself ever going back to the gc.com app.