Apple’s iPhone SDK is now on hand in beta structure at no cost download. (running your apps on an actual iPhone prices you a one-time $99 rate). the two.1GB download accommodates the entire XCode 3.1 environment for Mac apps development but in addition an additional 22MB of iPhone-particular SDK goodness including an iPhone simulator. to check your purposes on Aspen Simulator (i am assuming Aspen was the code-name for iPhone) either run from XCode or launch immediately fromDeveloper/systems/AspenSimulator.platform/Devel
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