I watched JJ earlier did a demo of his ‘side-project,’ a web-based expense tracker which has an SMS gateway. The budget-OC people would really love this application because tracking expenses can be done in-the-moment by just sending a text about an expense they made. Like from the jeepney or taxi, you can easily text your transportation expense. Other feature you can look forward to it are being able to set budget, and then receive notifications via SMS if you’re about to exceed your set budget.
I cannot wait for it to be available publicly. =)