The first version of geoEarl can now be downloaded from the Windows Phone Store. It doesn’t offer all the features, that the Pocket PC Geocaching Tools had, especially the GSAK-database support is not available. I see it as an addition to the official Groundspeak app to solve multi caches.
It offers the following features:
En- and Decryption
- ROT13 etc.
- One Time Pad
Transformation of texts and numbers
- Roman numbers
- Phone keypad
- and some more
Solver with 26 variables
Here is the link: http://www.windowsphone.com/en-us/store/app/geoearl/c1266a66-2972-4c99-a762-19f9f2a08e73