I use Moneydance http://moneydance.com/ http://moneydance.com/. It's not a web app but runs on java. Uses double-entry accounting. All though that said I would

I use Moneydance http://moneydance.com/ http://moneydance.com/. It's not a web app but runs on java. Uses double-entry accounting. All though that said I would love a website that didi it. To answer (5) I would use it on both my laptop and my phone. The phone version would be to just enter transactions on the spot while the laptop would be used to reconcile for expenses etc.