The MAC calculator is the [link=http://en.wikipedia.org/wiki/Mean_Aerodynamic_Chord#Mean_aerodynamic_chord]Mean aerodynamic chord[/link]. Sorry for the confusion.

But I am going to do the app on iPhone and iPad. How soon kind of depends on the reception and how many requests I get. If I get a lot of people Liking the [link=https://www.facebook.com/RCCalculators]Facebook[/link] page and sending me requests for an iPhone/iPad version, I will get it done sooner. I have to buy a MacBook or Mac before I can get started though. The hard part is done. The design and calculations. I may do a web based version that would be at least usable on an iPad. Put your votes in.

I'm making the MAC and CG calculators smart and they use wing planforms instead of just being based on a tapered planform. I try to make the calculators "best of breed" and will continue to refine them.

I know the app is useful. I use it all the time. Even if it is just for the unit conversions. I have other unit converter apps from others, but the one in my app is simple to use.