Just by writing CSS
You just need to learn the new Mouin CSS styles, add the extra CSS to your existing web site, and click a button: the rest is automatic!
It's the simplest way for any web designer or developer to create native mobile apps. And you will be able to update the app content at any moment by just updating your web site.
The Mouin system can generate native mobile apps for the four major platforms: iPhone, Android, Blackberry and Java/J2ME phones. Other platforms coming soon.