I'd like to start creating a few apps for the mac and iPhone for personal interest, but I'm not sure which is the better place to start. Both seem to have a fair bit in common: objective-c, cocoa, xcode, etc. so I would assume that there are a lot of transferable skills.
My question is: which is the easier starting point? Creating a small iPhone app, or a desktop app?
Ultimately I would like to try out both platforms, I would just like a few opinions on the best place to start learning the general skills.
I have experience in .Net development with C#, and web development. But, this is my first foray into the mac dev community.