I'm planning to buy a new laptop and I noticed that a lot of developers have Macbooks. I own a very old lenevo laptop that's dying on me so I would like something that lasts longer. My budget is relatively flexible and I would like to start focusing on creating Apple apps. Is there a big enough advantage to have an Apple laptop if I want to develop iPhone apps?
Having an OSX operating system is imperative! The latest iOS programming language is Swift which needs xcode to compile. Unless you installed OSX inside a virtual machine, or found a way to get xcode working on Windows I would go with buying an Apple.