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Learning iOS Development: A Hands-on Guide to the Fundamentals of iOS Programming by Erica Sadun, Rod Strougo, Maurice Sharp

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Understanding Model Differences

When it comes to application development, many iOS apps never have to consider the platform on which they’re being run. Most programs rely only on the display and touch input. They can be safely deployed to all the current family of iOS devices; they require no special programming or concern about which platform they are running on.

There are, however, real platform differences. The most obvious difference is in screen size between iPhones/iPod touches and iPads. Other differences are usually feature-based such as the types of sensors, the presence or absence of cellular-based networking, and a few other items.

These differences can play a role in deciding how you tell the App Store to sell your software and how ...

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