Mobile Technologies, Applications and Software Design Owl Currency Exchange rate viewer by HongSeon Kim The Owl Currency is an multifunctional exchange rate viewer from USD to Bitcoin, other 190s. The app is easy, because the complex configuration has been hidden as much as possible. If users need a complex configuration, they can find it easily. Each configuration button has a Chevron mark. And each page of each menu has its own unique layout. So users don't get confused with the other menus. Finally, the Owl Currency can be still simple although it has multifunction.