Fast Exchange Rate (aka Szybki Kurs Walut) is an Android application that lets you download and check the current exchange rates for different currencies. It offers a range of features such as browsing currency history, creating visual graphs, and using a built-in calculator to convert rates. The best part? It works offline! The base currency options are the Polish złoty [PLN] (daily data from the National Bank of Poland), British sterling [GBP] (daily data from the Bank of England), and the Euro [EUR] (daily data from the European Central Bank).

Fast Exchange Rate also includes a widget, which allows you to choose your favorite currency, for easy access. The app also has an option to download archive data. With a user-friendly interface, it is easy to navigate and use. For any feedback, the app provides an in-app button. Fast Exchange Rate is a free application that falls under the Business & Productivity category, specifically under Finance.