I build Angular / JS / 2/ 4 Frontend-Applications for Web and Mobile (Ionic). I have over 3 years professional work experience developing with Angular, and 7 years as a Full-Stack Web Developer. An Angular App is a standalone dynamic Javascript Applikation to display the UI, provide the UX, collect Date and send it to your API. Angular is Cross-Platform: Build-once and use the same code everywhere: Web, Android & iOS.