Because Microsoft stopped distributing their expenses tool and I don't like the alternatives I have seen, I have programmed a little thing myself.
You can modify the values shown in the lists in order to fit your wishes. Option to export to tab-separated text file for importing in Excel or other program.
v0.91 (22-8-2008)
Quick entry mode
Background to make finger friendly buttons more clear
v0.90 (17-8-2008)
Finger friendly item entry
Logging is now optional