Buy Now, Pay Later sites have exploded onto the market in the last few years. In just one month of 2020, the number of active users jumped 186% year-over-year, according to data from Sensor Tower. There are now over 800,000 sites in the United States that offer Buy Now, Pay Later. While the idea of a Buy Now, Pay Later site is simple, the strategy behind it is quite complex. In this app, we're going to take a look at the how Buy Now, Pay Later sites work and how to use them to your advantage.