I believe you will need to have a GPS receiver add-on to actually USE the app for caching. I use it to download the cache info (description, etc.) then use my Garmin for the actual GPS. If you search the Forums for "ipod for caching" it should have more detailed discusson. I know Bad Elf makes something. I was going to get one, but for a bit more I am going to upgrade my GPS to one that enables paperless caching, that way it's all in one. Hope this helps - I do enjoy the app for just getting the info into one spot though!
