I'd be more keen on a web based version. I don't mind phone/android apps but I believe web based apps are far superior because literally any device with Internet can access it, where as if you go the android route, you have to support multiple platforms, such as android, iphone, IOS, windows, and mac...its a lot easier to make a mobile friendly website than it is to cover 4+ platforms.
-Matt
the port size in the spread sheet.....which one should be put in here? Is this the barrel port, the transfer port, the exhaust valve port, smallest port in the system, largest port in the system....?