NDConvert
NDConvert is a powerful unit converter designed and built for both the technical professional and casual user, and available for the Apple iPhone®.
NDConvert focuses on reliability, speed and usability through rigorous cross checking of conversion data and by minimising unnecessary animations present in other unit converters.
The iPhone edition is available on the App Store and features an elegant user interface, quick switch between units from and units to, automatic calculation of conversions, conversion history navigation and large keypad buttons to minimise input error.