Address Uno is a variation of Palm's own Address Book application that adds two badly needed features: support for one-handed navigation and sorting by first name.
If you know how to use the built-in Address application then you know how to use Address Uno.
Update Description:
Version 1.2 - 10/11/2002:
- The letter-navigation keys (Tasks and Notes) wrap around.
- Pressing the Date Book key for over a second exits the application.
- Support for the high-resolution modes of the Sony Clié and Handera handhelds.
- The Date Book key can no longer be used to jump directly to the letter Z.
- Fixed bugs related to the handling of international characters.
- Fixed a bug that caused inconsistency between the fonts in Address Uno and the built-in Address application on devices with PalmOS 3.5.