Currency Converter ² is a free Android application developed by halmi.sk that provides instant currency conversion for over 180 world currencies. It also supports 53 cryptocurrencies, including Bitcoin, and has exchange rates from 23 sources. The app features history charts for each currency and works offline, making it the perfect money converter for your trip.

The app's user interface is simple and easy to navigate. Its instant conversion feature allows users to quickly and efficiently convert currencies without the need for an internet connection. Additionally, the app provides a widget for fast money conversion, which is a convenient feature for users who need to convert currencies frequently.

Overall, Currency Converter ² is a reliable and efficient app that offers a wide range of features to make currency conversion hassle-free for travelers. Its offline capabilities and support for cryptocurrencies make it stand out from other currency converter apps.