Compared effort when developing Android and iOS app [closed]

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Given:

• A desired application called APP wich will present 2 "forms" and will comunicate with a web server to call 3 Web Methods.
• One developer with nearly equivalent expertise on iOS and Android platforms.
• X: required effort to build APP for Android only.
• Y: required effort to build APP for iOS only.
• X = K1 * Y where K1 is a real number.
• Z = K2 * (X + Y) where K2 is a real number and Z is defined as the required effort to build APP for bot开发者_如何转开发h Android an iOS.

Please answer:

• What is the approximate value of K1?
• Assuming that the formula for Z is acceptable, what is the approximate value of K2?

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It depends so much on the actual specifications that I think it's impossible to estimate but based on my latest projects that don't have UI customizations I'll make one:

• K1 = 1.4 - I find developing on iOS much faster and easier in this case using Interface Builder and the ASIHTTPRequest library
• K2 = 0.95 - It helps to know the protocol for the web server but in this case (3 methods it doesn't matter very much)

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IMHO:

K1 = 1.5 Android development is usually slower than iOS and calling web services from Android can be tricky (kSOAP).