Scrooge is a Chase mobile app with a clear structure that supports users in their efforts to save money. The app is first fed with data on income, fixed costs and savings goals. The program then calculates a sum of available money for daily spending. A glance at the app is enough to plan on future purchases: a blue background signals the user has money available for spending while a red background signals that the limit has been exceeded. An additional calendar function informs users about their daily spending habits.