I have a WP site. Now wanna create an iPhone app base on the content from my site so that the visitors can read my site easier.
I wanna create one just like the iPhone app by Mashable (the Mashable should be based on WP)
http://itunes.apple.com/us/app/mashable/id356202138?mt=8
Anyone can advise me how should I start?
Or any template of such?
There are two main ways to do this: either you create a complete iPhone application, written in Objective-C, that gets data from your blog via an API. This can be regular RSS feeds, XML-RPC or a completely custom solution. Be prepared for a lot of development in both Objective-C and PHP (because your API should be secure of course).
The other option is to use or develop a mobile-optimized theme, with extra tricks to get more integration with the device, like GavinR hinted. This is much simpler, but won’t offer everything that a custom application can (no offline access, for example).