Mobile applications are generally bespoke and therefore the time taken to develop them can be significant.Sometimes an application is the only option if control of the camera is required or other low level functions that cannot be done on a web site.
Where possible we can tailor web pages to work on mobile platforms using responsive design. The latest site we have developed has responsive design and the customer was quite impressed at the viewing experience on their mobile. This is not only time saving, but also reduces the costs of being mobile.
Reserarch has shown that users lose patience when viewing sites on mobile devices that do not scale correctly.