design an app for runners to engage them in collective challenges

This is what a business in France was looking for in their app design

Creative Brief: Running Application - Collective Challenges
Objective
To design a simple yet impactful mobile application for runners, centered around collective challenges. The app should offer an engaging, user-friendly experience while encouraging participation in running challenges. Starting with a minimalist and robust version, the design must focus on essential features, allowing for future enhancements as the user base grows.

Target Audience
Primary Users: Casual to dedicated runners who enjoy tracking their progress and participating in challenges.
Motivations: Community-driven goals, personal achievements, and tangible rewards.
Needs: A visually appealing, straightforward interface with real-time progress tracking and clear challenge objectives.
Core Features
Main Screen: Current Challenge

Displays the active challenge with a title, visual, prize description, and countdown for kilometers remaining.
Prominent "Join" button for … Read more