One aspect of Windows Phone 7 that I have really come to appreciate is the Metro Design and its Hubs. Currency Converter Pro takes full advantage of the horizontal lay out.

All-In-One Unit Converter tries to get it all done in a single app. It boasts measurement and currency conversion along with various converters for more niche needs.

Built-In Currency Converter. With iOS 16, Apple is giving Live Text, ... Apple unveiled a new design that will inform the next decade of iOS, iPadOS, and macOS development, ...