Why is an App better than a mobile version of my Web site?
Your app can take advantage of built in hardware such as GPS (for directions and maps), and the camera (for posting pictures). In addition, the app is optimized for speed, ease of use, and a positive user experience.
With an App, your App is always available on the phone. It's much easier and faster for your audience to get to your content when they want it.
You can customize the format and content you want them to see. With a mobile Web site they can get distracted by links out of your site, features may not work, animation might not be shown, and more. With an App you have complete control over their experience when they are interacting with you.