# Extra: Digital prototyping shortcuts

If you want to turn your sketch or image into an interactive prototype of an iPhone or Android app you cannot go wrong with [POP by Marvel](https://marvelapp.com/pop).

![Turn a paper sketch into a clickable prototype with POP by marvel](https://3244289498-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-MGNOCop6rHv4gI1hU8C%2F-MGeCdq5B_ZRDBCJUCAT%2F-MGeEA2X3Zf7-35Oaghq%2F0-4qrkNqYYrBKDvf6V.gif?alt=media\&token=36ed6495-d5e3-48a3-aacc-82f23b40edf7)

It allows you to sketch your interface on a piece of paper, take a picture with their software and add clickable areas that link to different pages. For the test user, the interface will feel like a sketch version of your app mimicking what would happen if you click links and buttons on the page.