See this: https://www.youtube.com/watch?v=8RpErX9NWsQ&feature=youtu.be
When you travel to a foreign country, you need to exchange currency.
In a bank or an exchange center, you will pay between 5-15% to get the currency you need. (And you probably won’t even realize it)
With uChange you will get the real, honest rate because you will be changing with people like yourself; not banks that are looking to gouge you.