Startup Idea: Spending Tracker Software

Startup idea to develop a spending tracker software which allows users to log and analyze their purchases and consumption on a yearly or monthly basis, such as dog food or coffee expenditures.

I would like a software program that tracks my spending where I can enter what I buy and how much of it I consume in a year. For example, how much dog food I buy and what my price per month is. Or how much I spend on coffee throughout the year, or monthly.