Paribus app helps you get money back on purchases

SAN FRANCISCO (KGO) -- You've likely seen the price match guarantees of many retailers, but when's the last time you've taken advantage of one?

Now, there's a new app called Paribus that could help you earn a little money while shopping.

Right now, Paribus only works for online purchases, but has plan to expand. Users are charged a 25 percent fee for any money they are refunded.

Watch the video player above to find out more about how this app works.