In 2018, more than half of all website traffic worldwide was generated by mobile phones. This means that you need a well-functioning mobile responsive website before you even begin to think about an app.Mobile responsive websites automatically change the layout of your web pages so they are easy to view from either a desktop computer or a phone. Take a good look at how your website performs on mobile phones and tablets. If it's not a breeze to view and navigate, you're due for an upgrade. Fortunately, major website platforms like Shopify and Wordpress offer templates and themes with mobile responsiveness baked in.