Geocaching Backpack is a set of tools which can help you while searching for Geocaches. Geocaching.com is a game in the real world where you search for so-called 'caches'. Most important tools: - Notes, write down all important information for your Geocaching adventure - Compass, know which way you have to go - Formula calculator, enter equations with letters and make the necessary math easy - Convert coordinates, from DD to DDM and the other way around - Calculate projection, find the coordina