This is not a traditional design challenge. There is no client brief, no wireframe spec, no predefined product. You own every decision from the first pixel. Here's the prompt: Pick an activity you're passionate about — biking, painting, cooking, climbing, birdwatching, anything. Now design a mobile app for people who share that passion. Identify a real problem this audience faces, design a solution, and prototype it. That's it. The rest is yours. Make as many assumptions as you need. There are no wrong answers to the domain question — we care about how you think through the problem, not which hobby you pick. A cooking app and a rock climbing app are on equal footing.
These keep the exercise grounded. Honor them as you work:
Identify a specific, real user problem and define a target audience
Prototype a core mobile user journey end-to-end within a time constraint
Articulate design trade-offs and scope decisions clearly in writing
Demonstrate AI fluency by documenting and critically evaluating AI collaboration
Define success metrics and credible next steps for the product
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