Some much smarter than me posted this in one of the threads it seems to work well.
humptybump
Join Date: Feb 2011
Location: Eastern Shore of Virginia
Posts: 1,436
iPhone app
For iPhone users (and probably Android), I wrote a web app - http://6472.us/wb
If you bookmark it to you smatphone's home screen, it caches itself and no longer requires a data connection. It also remembers the values from your last calculation so once you enter you fixed values, they "stick". I wanted something so convenient, I'd use it for every trip and every passenger.
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- Glen, ESVA
RV-8 150hp FP VFR | Track my RV-8