If you don't want to put a lot of time into your app-marketing site, the easy solution is to just setup a blog using a Wordpress theme designed for that purpose. There's a bunch of free ones that do a good job of highlighting your app in a format thought-through by the theme's designer. They also give you the ability to use the built-in features like subscriptions, and other Wordpress-native plugins to engage your users without having to code it all yourself.

Here's a free one. There's a lot of others too. Just search for "Free App Wordpress Themes" to find some others:

http://www.appdesignvault.com/darstell-iphone-wordpress-them...