Over in the Crackberry forums, a small group of us have been developing and testing a new open source geocaching application for the BlackBerry. We have named it BlackStar.
Centuries ago, explorers used the North Star for navigation, now you can use the BlackStar. OK I am still working on that tag line
BlackStar is still in development/Beta testing mode, but has really solidified recently. With BlackStar, you can import GPX and LOC files from your sd card, and the cache details will be stored in the application. You can navigate to the waypoint with a navigation arrow. It also has a compass.
Coordinates can be either in dd.ddddd or dd mm.mmm format. It also supports MGRS format coordinates.
The price is free, we just ask that while you are using it, if you notice a bug in the app, or can think of a "must have" feature, that you let us know. Only BlackBerry smartphones are supported.
While I do not expect it to replace your handheld GPS, it is nice to always have the capabilities on your GPS enablned BlackBerry phone. You may not always have your handheld GPS with you, but you almost always have your phone.
Feel free to try it out: forums.crackberry.com/f41 - its called "Application that shows Lat/Long etc without maps? "