RapExpense for iPhone

From Parkview Consultants:

RapExpense is a tool designed to help you track of your expenses. Its based on the same approach as the popular palm pilot expense application and offers you a no-nonsense, flexible approach to recording your expenses. RapExpense is written by an experienced international traveller who has stripped down the functions to give you exactly what you need, a fast, intuitive way to keep track of your expenses on the move. Version 1.3 have vendor and location fields support pick lists, improved export to CSV, and fixed ordering when changing dates on old items.

Note: The "Download Now" link directs you to the iTunes App Store, where you must continue the download process. You must have iTunes installed in order to open the link, and you must have an active iTunes account to download the application. This download may not be available in some countries."