SmartGPX is a geocaching.com Pocket Query viewer for Symbian OS based smartphones. It is designed to be as simple as possible. You can hold your GPS receiver in one hand and your Symbian OS device in the other hand to view your location and the cache description at the same time. The actuals versions of SmartGPX are quite stable now and have a wide range of functionalities, that make Geocacher's life a bit easier.