I can often have as many as 10 jobs on the go at any one time with some lasting many weeks. It can be difficult  and tedious to keep track of expenses and I used to list the expenses within iCal on the days of the shoots.

I found a very user friendly, comprehensive and simple application called JetSet for the iPhone that makes keeping track of all jobs a breeze. It offers logical organizing of receipt categories, options to photograph the receipt, and it uploads to job summaries to google documents. Here are some screenshots.

Jetset main screen

Job details