Yes. Same as the development lifecycle for web apps. The UI-first approach ensures that you pay attention to how users will use your app, as opposed to how you

Yes. Same as the development lifecycle for web apps. The UI-first approach ensures that you pay attention to how users will use your app, as opposed to how you would like to build it. It's a subtle yet significant distinction. BTW, there are lots of free wireframing templates for mobile apps that you can use. Even pencil and paper is a good start. Then you can run those wireframes or sketches by a few potential users to get their impressions before committing to code. As in web app development, it's easier and cheaper to change a wireframe than to change code.