A mobile app is a native software application that can be downloaded and installed on the user’s smart-phone. Mobile apps can include some interesting features, such as push notifications.
A responsive website is a smart-phone and tablet friendly version of your website. The responsive site will have large easy to tap button, and content that is formatted to fit correctly on a mobile or tablet sized screen. This way your customers don’t have to pinch and zoom to find what they’re looking for. This website will display automatically when someone tries to access your site from a smart-phone or a tablet device. No downloads necessary.