Nick sent us the following information and screen shot for his "Smart Units" app. You can see by the description this is definitely a powerful Unit Conversion application.
Smart Units – Intelligent Unit Conversion is an innovative new unit conversion app. It features over 600 different units, spanning 18 categories and includes 168 up-to-date currency exchange rates! A built in calculator is provided to make inputting units faster and easier. For when you are only interested in simple conversions (e.g. meters to feet), a toggle is provided to limit the available units to your favorite units only.
Don't settle for a lesser unit converter only to find it doesn't have the units you need. Get the one that does it all.