환율계산기환율환전계산기여행 is a free Android app developed by 여행의 고수. This app provides a convenient way to calculate exchange rates for travelers. The app offers features such as fixed exchange rates, easy rate updates, real-time simultaneous calculations, and an airplane mode for use during flights.

With a total of 247 countries' exchange rate information available, users can quickly convert currencies and easily switch between countries. The fixed exchange rate feature allows users to save the exchange rate they used when exchanging currency, ensuring accurate calculations. The app also offers the option to update exchange rates offline, providing stable calculations even without an internet connection. Users can also benefit from real-time simultaneous calculations, making it easier to split expenses with fellow travelers. The app's UI design is simple and user-friendly, making it accessible to all users, including beginners.

For more information and updates, users can visit 여행의고수's blog and café channels.