This plugin and related service provides a great mobile website package that allows your website to be distributed via the App Store, but it is not however a full App.
Your website and device must be connected in order for this service to work. The 'app' communicates with your website and renders the pages on you device. The app does not work in airplane/offline mode.
I used the phonegap build method as I couldnt find the paid build service on the apppresser website, but I can't see how the end experience would be any different.
Its a great start, but some form of offline mode for static content is needed before this can really claim to be an app-maker.