Miracle Mobile App is 100% native and utilizes all the native features of mobile devices. Forms and pages use native controls to render on the device and work 100% offline. No web-based, browser-based or hybrid model is used in Miracle Mobile Apps.
That said, there is a control in Miracle Studio which allows mobile form designers to embed web pages within their forms or open websites in external browsers. The Web View control enables linking to web pages from within the mobile app, which can be useful for certain business use cases. Aside from the Web View control, everything else is 100% native on iOS, Android and Windows versions of Miracle Mobile App.