This design is a fictional travel app called Wander. The user would browse curated articles related to locations they want to visit, and collate experiences that appeal to them.
This user is developing potential travel plans, so the branding of this app is bright and fun to match the excitement of the activity. Colour and negative space give the app a sense of air and energy.
The idea of travel is inherently tied to photography, demanding an image heavy design. These images are the hero pieces of the app, and in order to avoid visual clutter, colour in the app is used sparingly.