Engineers:

I just released a fluid properties app for iOS called ThermoFluids. It lets you retrieve single phase property data for a wide range of fluids, including many common refrigerants, based on pressure and temperature. Focus is on convenient display of data for doing quick calculations and comparison.

Download Link

Its only going to be free for a limited time, so get it, use it, and let me know what you think.

More Info

Cheers