For mobile integration I highly recommend a CalDAV[1] feed. This sort of budgeting really makes a calendar view essential, and CalDAV integration with the phone's own calendar seems ideal.
Beyond that, some minimal mobile access would be nice for things like adding/modifying recurring events, updating the balance, or entering a new one-off debit/credit.
I stress this because I think for a lot of people budget applications provide a peace of mind, and it's nice to be able to check in on and confirm these things while you're on the go.
Beyond that, some minimal mobile access would be nice for things like adding/modifying recurring events, updating the balance, or entering a new one-off debit/credit.
I stress this because I think for a lot of people budget applications provide a peace of mind, and it's nice to be able to check in on and confirm these things while you're on the go.
[1] http://en.wikipedia.org/wiki/CalDAV