I’ve been using iCaching for almost a year, and it just keeps getting better and better. Every time a new challenge is published I go to iCaching to see if I already qualify; and if I don’t qualify, I switch one of the compound filters from “found” to “not found” and get a list of caches that satisfy the challenge requirements. As mentioned in other reviews, being a premium Groundspeak member provides the option for pocket queries, which iCaching imports flawlessly on demand. I especially like the feature that allows me to load the GPSr with only those puzzle caches that I’ve solved, and it even transfers any notes I’ve created on the iCaching page to my Garmin 62s. Creating custom gpx files is easy, and very useful in other mapping applications. Don’t be deterred by the few negative reviews for the app, those reviewers should have just posted a DNF and tried again later.