Wireframe sketching forms an integral part of designing any mobile app. It is the first and foremost step for a designer when beginning to map out the user experience and layouts for a mobile app.
As such, these are often very rough and involve a great deal of revisions and erasing. Despite this, designers often still manage to make their wireframes extremely appealing, and they are particularly interesting to view in terms of inspecting how each designer goes about planning the designs in their own unique way.