Personal finance management. It helps you analyze how much you have spent, how much is left available, and what's your net worth. Money also reminds you of upcoming bills, alerts you when overdraft or over credit limit is about to happen.
One of the key features of this application is that it permits you to enter a transaction value in a different currency of the one assigned to the involved accounts. For ex. if you have a EUR credit card, but you make a payment in USD, you can enter the transaction in USD (using a default exchange rate). During the reconciliation you can adjust the rate.