BJJ Gym & Practitioner App: Mobile UX/UI Case Study

Role: lead UX/UI designer, end to end

Client: early-stage startup founder

Platform: mobile app for gym owners and practitioners

Timeline: 3 months

Tools: Figma

Delivered: research, personas, information architecture, sitemap, user flows, wireframes and 120+ high-fidelity screens

The founder came with an idea, not a spec. The app had to serve two very different users at once: gym owners who manage memberships, and practitioners who want to train, learn and track their progress.

I led the UX from the ground up: competitive analysis, a journey map and qualitative research, then personas and empathy maps for both the gym owner and the practitioner. From there I built the information architecture and sitemap, mapped the key user flows and tested the structure in mid-fidelity wireframes before any visual design.

A bold dark UI with a clear type scale, a colour system and reusable components, so every screen stays consistent as the product grows.

More than 120 high-fidelity screens covering onboarding, tutorials, gym membership, practitioner profiles and progress tracking.

Have an app idea but no spec yet? Message me your idea, who it's for and your deadline, and I'll reply with how I'd approach it.