I've been hunting around for a good expense tracker. It seems like most of the apps available would do more than what I want them to do. Most are designed, it seems, to track expenses in different categories over discrete intervals, assuming that there is a fixed budget for each time interval (i.e. that there is a daily, weekly, or monthly budget, for instance). I'm interested in something that can keep track of an ongoing project budget, regardless of the time/day. We have X amount for the project. Out of X we can spend a for flights, b for vehicle rental, c for food, d for shipping, etc. I just want to keep track of that, and have it already in an electronic format for when I go to do my expense report. Does anybody have any suggestions, particularly bassed on their own experiences? I should also note that I'm completely new to the iPhone experience, in that I won't have my own phone until the middle of next week. There might even be a simpler way to do this with the phone not requiring any kind of dedicated app. Normally, I would just write it all down in a notebook. Fairly simple. However, this project has a larger budget than I'm used to, it's categorized, and involves most of my time being out of the office and away from a computer.