Simple Currency Converter, developed by Lucky Coin, is a free Android application that allows users to quickly find out exchange rates. With support for over 140+ countries, this tool is both free and easy to use. One of the standout features of this application is its offline mode, which allows it to work even without an internet connection.

In addition to its offline capabilities, Simple Currency Converter offers other useful features such as data graphs that cover up to three years and are updated every minute. Users can customize their currency lists and choose from four stylish themes. The application also offers precision, allowing users to set the number of decimal places between 1-6.

One minor drawback is that changing the default currency requires a few extra steps, such as clicking the swap button and swiping left or right to remove items. Overall, Simple Currency Converter is a convenient tool for anyone who needs to convert exchange rates quickly and efficiently.