Budgeteer is a personal finance app for tracking expenses and calculating budgets.
It is targeted toward tech savvy (but not necessarily technical) users with disposable income who want to get a better control of their finances but don't want to spend a lot of time accounting.
Budgeteer is a mobile app being developed for iPhone and Android. There will also be a web interface and integration with social media (Facebook.) SMS expenses and reports will be available in a future release.
A web prototype is available that provides a general impression of the functionality and will be used to exercise the web services. A UI design document and functional spec are forthcoming.