Before designing anything, I audited the existing experience across desktop and mobile to understand what was actually broken. The problems fell into a few clear categories.
• Layouts didn't hold up on mobile, with components collapsing or overflowing in ways that made the experience feel unfinished.
• Navigation Patterns were inconsistent between the two challenge types, so a member who created a step challenge and then joined a habit challenge encountered what felt like two different products.
• The Leaderboard was one of the most engagement-driving surfaces in the experience, and a product manager kept pressing on how to display metrics fairly across different challenge formats, since a step count and a habit streak aren't the same kind of number.
• The Creator Role had no clear visual language distinguishing it from a participant, which created confusion about what actions were available and to whom.
I documented these findings and brought them into critique sessions with other designers before aligning with product on which problems were highest priority to solve.