And now for the more ambitious of my Windows Phone 7 apps (thus far), my measurement conversion app: ConverterPlus.
I’ve uploaded a demo to YouTube:
This app converts between US Customary, British Imperial, and Metric (SI) systems for mass, length, velocity, volume and area, and between Fahrenheit, Celsius and Kelvin for temperature. It also converts decimal to fraction values (and vice-versa). It also features a standard four-operation calculator and a fraction calculator.