Tools Required for iOS Application Development

Today, I'd go with either a 15" or 17" MacBook Pro. They would allow you to work with the iPad simulator at its native resolution. It's a bit too big to run full-size on the 13" models, so I always end up running it at half size, which is less than ideal. Even if you're not planning to develop for the iPad right now, I'd still plan the hardware purchase around that possibility. The likelihood that you'll do iOS development and never build for the iPad is pretty low.

Beyond the simulator issues, I like to have the largest screen possible when I'm programming. I have a 13" MacBook Pro, but I connect it to a 24" monitor when I'm at my desk. If you're like me, the 17" would be ideal, if you don't want to have a second screen.

However, Apple is holding a Mac-focused special event tomorrow, and it's never a good idea to buy a Mac this close to one of those events. The entire laptop line is due for updates, and there has been (unconfirmed) speculation that any new models may run at higher screen resolutions, especially on the smaller end of the range.

Clearly: No. The simulator does not offer hardware access (gyroscope, accelerometer, etc.) and also, you just don't get the feeling for your App, which is very important in iOS development. You can't use the gestures and you don't know how it reacts if you work with it. so it is definitely not advisable. I tried to use the simulator in the beginning, but some frameworks don't even run on it.