I've heard c:geo violates groundspeaks tos. I don't want to use it just for that reason, I have my eye on geomate gps, and I intend to use that, and someone mentioned neongeo (?) which I've been using. I haven't been able to get out and about looking for caches because work keeps getting in the way , but hopefully can get out on my days off this week.
I did not know this about c:geo. Very disappointing as the other apps don't look nearly as good.