We are new to the Geocaching. When we go hunting we have two phones the samsung galaxy s2 and the samsung express. We use the Geocaching app. We have no trouble finding caches. We decided to hide our own cache but can not get the GPS location right. The first time we used both phones and the corrdinates matched up. When people went to find the cache they were about 17ft off of where the cache really is. So I downloaded another app to my phone we went back and tryed it again. We had the same person go find it again, she was closer but still said she was about 10ft away. Is there a better app that we should use? Shoud we invest in a cheap hand held GPS device? Thank you for any information.