Case study · 2026 · founder, solo build SupraFitPro
A coaching platform for independent personal trainers: a web portal for the coach, a free phone app for every client, one database between them.
My roleFounder · product, design, build
Platforms ● iOS● Android● Web
Built withReact Native · Expo · React · Vite · Supabase
Visit suprafitpro.com
The problem
Coaches lose clients quietly.
Independent trainers run their business on WhatsApp, spreadsheets and PDFs. Nobody tells them a client stopped training until the client cancels. [In your words: what you saw coaches struggle with, and what “done” meant for the first release.]
Decisions
The calls I made.
Two apps, two jobs
The coach plans and watches on the web, where the screen is big. The client trains with a phone in one hand, so the app is one big button per set. [Why you split it this way.]
A radar, not a dashboard
The portal opens on three lists: needs you, worth a look, all good. The coach sees who to message before the client drifts away. [How you decided the rules.]
[A call you’d make differently]
[One honest trade-off.]
Built with agents
Where agents helped, and where I stepped in.
Agents did[What agents drafted: migrations, screens, end-to-end tests…]
I did[What you owned: the Radar rules, pricing, talking to coaches.]
I overrode[One moment the agent was wrong and how you caught it.]
2 apps, one database
[N] coaches using it
[N] sets logged
