04 / Case study
Published product · Mobile-first fitness PWA
A lifting-first workout tracker that turns personal progress into friendly competition.
Top Set is an installable fitness PWA for logging lifts and cardio, following exercise progress, and competing with friends. Workout state stays durable through mobile interruptions, while scoring, roles and group data are enforced behind the interface.
System architecture
THE CHALLENGE
A social fitness app has to stay fast enough during a lift, recover safely after interruptions, and compare users fairly. Raw strength alone cannot determine scores, and offline retries must not create duplicate workouts or XP.
WHAT I DID
I separated the React screens from services and pure scoring rules, used Supabase Auth, row-level security and database functions for authoritative actions, and added IndexedDB recovery for active sessions. Automated unit, integration, browser and visual checks cover workout logging, progress, groups and administration.
WHERE IT STANDS
The published PWA now supports lift and cardio logging, exercise progress, weekly goals, badges, group standings, chat, reactions and a global leaderboard in an app-first mobile interface. It can be installed and continue loading its shell offline, while private data and scoring paths remain protected.
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