If you create a website and use responsive web design (the website automatically changes the way it looks on different screen sizes), you can have your cake and eat it too. :)

The website would be usable from a large screened device (like a laptop) and if it is accessed via a small screen (like a smartphone), it will "reformat" the way it looks to make it usable on a small screen.

You can go one step further and create a mobile app which will create a "webview" of the website. Thus, when people open the mobile app, they "see" the website and interact with it the way they would with an app.

I have experience in responsive web design, smartphone development, and implementing webviews in smartphone apps. Please give me a call if you would like more information about these subjects.

Cheers,
Jordan