Both Are Different , A mobile app is an application that runs on a mobile device to perform a specific function.
Mobile Apps have Number Of Drawbacks , one of major for mobile app is its cost. Apps usually have to be built to run on specific devices, so if your target audience is using a combination of i Pads, i Phones, Android devices and so on.
Mobile Website is platform Independent and open with variety of different mobile devices using whatever web browsers are installed on those devices .
For Getting More Concluded Discussion On Mobile Website and Mobile Application Would Like to Suggest you to follow Link
Where Both Pros and Cons of Mobile website as Well Mobile Apps are Discussed and Also A Conclusion is made over What is Better for you and Why ?
The golden rule for every business man is this: “Put yourself in your customer’s place.