In the past, I've been using a spreadsheet on a Palm Pilot and, recently, on my N810 to track expenses for me and my friends when going on vacation together.

SplitTheTab is a specialized, more tablet friendly application to do the same.

It's written from scratch in PyMaemo, and I just uploaded an alpha release to the Garage.

You can find more details on the Garage page, or directly download the .deb package .

Feedback and questions are welcome, please use the tracker
for actual bugs or feature requests.

Below is a screenshot of the (to-be-improved) transaction editor.