Cuju · 2016-2018

Sole designer on Cuju's AI football app: 28% less churn and 60% more event sign-ups.

RoleSole Product Designer
PlatformiOS + Android + Web
Scale50k users, mostly Brazil
FocusApp, Web, Brand, Design System, Research
Cuju hero visual

The problem

Cuju is an AI-first app for young football players and fans: film challenges, get AI analysis of skills, compare, and improve. Multiple previous designers had created inconsistencies in the app, causing confusion, low retention, and onboarding drop-offs.

What I did

As the sole designer at Cuju.pro, working alongside iOS, Android, and AI teams, I helped define and refine the app over 18 months of updates and iterations.

I audited legacy assets and unified them into a flexible design system, and conducted real-time testing with coaches, parents, and kids to find the “aha moment”, when swiping left and right made sense to introduce the CujuBot and CujuCoach functions.

Beyond the app I delivered a launch-ready app, website concepts, and visual marketing kits, including VFX editing in Adobe Premiere. Company-wide collaboration improved through asset reuse from the new design system.

Outcomes

−28%churn after launch
+60%event sign-ups post-launch
18 moof continuous shipping as the only designer