c:geo is Geocaching tool for Android. It's opensource !

Vup to 20130522:
Vup to 20130516:

Vup to 20130403:
Tiny modified version ( 2013.04.07 ) : 
- draw 161m circles speed up.

Obsolete :
Tiny modified version ( 2013.3.26 ) : 
 - Call Google Navi with walking mode.
 - No filling 0.1mile circle.

 - Owned cache display bug ? fix.