From Hiratte Software Solution:
CleanData is a powerful utility that allow you to remove orphaned/leftovered databases and saved or unsaved preferences on your device memory. Orphaned/Leftovered databases and preferences are items that do not associate with any application on your device memory or card.
CleanData is a companion application to CleanUninstaller. You may use CleanData to remove orphaned/leftovered databases and preferences, and use CleanUninstaller to monitor and uninstall newly installed applications completely from your device.
Able to backup and restore original processed databases or preferences.
Able to search for owner of leftovered database and preference on memory and any directory of expansion card.
Able to assign owner of leftovered database and preference, so that it will be deleted when uninstalling the owner application by CleanUninstaller.
Supports 5way Navigator and Treo Rocker.
Supports Palm Tungsten 5, Treo 650 and LifeDrive.
Supports HiRes and HiRes+ (320x480) resolution (Palm Tungsten 3/5, Sony Clie NX/NZ/UX).