US Dollar to South Korean Won is a free Android application developed by Currency Converter X Apps. As the name suggests, this app is a simple currency converter that allows you to convert United States Dollar to South Korean Won and vice versa.

The app's interface is straightforward and easy to use. It includes an online exchange rate feature that updates in real-time. Additionally, it gives you the option to manually change the exchange rate to the rate of your choice. The app also supports two conversion types: United States Dollar x South Korean Won (USD KRW) and South Korean Won x United States Dollar (KRW USD).

Overall, US Dollar to South Korean Won is a useful tool for anyone who needs to quickly convert USD to KRW or KRW to USD. Its simplicity and real-time exchange rate updates make it a great option for those who want a straightforward currency converter on their Android device.