GSBuilder

Although there are more versatile geocaching apps (e.g. GSAK), they are usually complicated to use and set up. Therefore, the GSBuilder application was created with the goal of maximum simplicity in generating statistics.

Statistics can be generated in just a few steps - open a GPX or ZIP downloaded from geocaching.com, define Settings (first time only) and generate the statistics (before that, a preview of the statistics can be generated first). Once the stats are generated, just paste the contents of the Windows clipboard into your profile (Ctrl+V) on geocaching.com and you are done.