Workouts & trainers
Trainer-authored workouts, favourites, in-workout flows, and coach profiles managed from the CMS.
React Native fitness app Sydney Health & fitness
Di Lorenzo — React Native Fitness App I Built in Sydney
I am Muhammad Adil in Sydney. Di Lorenzo / My Fit Spot is the React Native fitness product I led end-to-end — Expo mobile, API, Stripe and trainer CMS — same hands as feels@home and Hub. Talk to me if you want a build like this.
Client story
One diary-style fitness product instead of fragmented apps
Challenge
Most fitness apps split workouts and nutrition. Di Lorenzo needed one experience with personalized calorie targets, trainer-authored workouts, and a recipe catalog — updatable without constant app-store releases.
Solution
A modular monolith Node.js API serving React Native (Expo) mobile plus React and Angular web clients, with MongoDB Atlas, Stripe, and Expo EAS for reliable iOS/Android releases and OTA updates.
Platform
What My Fit Spot delivers in one product
Customers, trainers, partners, and admins share one API and content model.
Nutrition & recipes
Meal logging, recipe catalog, ingredient search, and personalized daily/weekly calorie targets.
Subscriptions
Stripe web subscriptions plus Apple/Google in-app purchase paths for Pro content.
Staff dashboards
React admin CMS, client insights, partner blog, and legacy Angular surfaces during migration.
System architecture
Modular monolith API with thin clients
High-level topology
One Express API with domain modules (users, workouts, recipes, payments, blog). React Native, React admin, and Angular dashboards authenticate with JWT against the same REST contracts.
App development
Nutrition summary flow
Home uses a single aggregation endpoint plus stale-while-revalidate caching instead of seven+ round-trips per date change — instant paint with reconciled macros for the day and week.
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Delivery
How the platform was built and shipped
From onboarding calorie engines to EAS store releases — one accountable full-stack path.
Product scope
One diary-style product for health and fitness — not separate workout and nutrition apps.
Primary users
- Customers
- Personal trainers
- Partners
- Admins
Mobile experience
Expo SDK 55, React Navigation tabs, Hermes, and New Architecture with selective redux-persist.
Includes
- Home / Today dashboard
- Workouts hub
- Nutrition log
- Recipes & paywall
API & data
150+ endpoints with shared insight builders so app and admin metrics stay consistent.
Includes
- JWT + role guards
- Mongo aggregations
- Calorie target engine
- JSON + base64 uploads
Admin CMS
Vite + React 19 admin with TanStack Query, TipTap blog, and partner/admin role toggle.
Includes
- Recipe editor
- Workout builder
- Client insights
- Partner blog
Release & ops
Production on iOS and Android with OTA JS fixes and health-checked API deploys.
Includes
- Expo EAS Build + Submit
- expo-updates OTA
- PM2 + /healthz
- Endpoint audit scripts
Results & impact
Production fitness platform with a clear modernization path
Unified fitness + nutrition on iOS and Android, continuous CMS publishing, and a React admin replacing legacy Angular sprawl — without blocking day-to-day releases. I am Muhammad Adil in Sydney — I led Di Lorenzo / My Fit Spot in React Native. I wrote how I build React Native fitness apps in Sydney.
- Unified product used in production on iOS and Android
- Trainer/partner CMS without mobile redeploys
- Client insights for calories, food log, and workout adherence
- 150+ API endpoints with role-aware guards
Questions
A few direct answers
Clear answers from me in Sydney — the questions I hear most before a build starts.
Talk to meWhat is the Di Lorenzo / My Fit Spot case study?
Di Lorenzo / My Fit Spot is a production health and fitness product I led from Sydney as Technical Lead across React Native (Expo), a Node.js API, MongoDB, Stripe and React admin dashboards — roughly five years of mobile, API and CMS work. It unifies workouts, nutrition, recipes and trainer content instead of splitting them across separate apps.
What stack did you ship for Di Lorenzo / My Fit Spot?
React Native with Expo for iOS and Android (including OTA updates), a modular Node.js API (150+ endpoints), MongoDB Atlas, Stripe subscriptions, and a Vite + React admin CMS for trainers and partners. That is the same delivery style I use on React Native app development at https://madil.com.au/services/app-development/ and custom dashboards at https://madil.com.au/services/custom-dashboards/.
Can you build a similar React Native fitness or health app for my Australian business?
Yes. I am Muhammad Adil — one engineer in Sydney, not an agency roster. If you need a diary-style fitness or health product with mobile + API + admin, start with app development https://madil.com.au/services/app-development/ and the React Native fitness notes at https://madil.com.au/blog/react-native-fitness-apps-sydney/. For staff portals and reporting, see custom dashboards https://madil.com.au/services/custom-dashboards/.
How do we start a build like Di Lorenzo?
Tell me the product goal, who the users are (clients vs trainers), and whether you need iOS/Android, an API and an admin CMS. I map scope and stack myself, then ship in stages with written updates — the same way My Fit Spot stayed in production while the admin modernised. Talk to me via https://madil.com.au/contact/ — I usually reply within one business day from Sydney.
Talk to me in Sydney
- Talk through the work. I build AI, mobile and full-stack products in Sydney around the outcome you actually need.
- Start with a clear plan. I ship websites, apps and systems Australian operators can run — not a slide deck.
Websites, apps and platforms I ship in Sydney.
Senior engineering, not an account team.
I stay on products I ship — Di Lorenzo, feels@home and Help and Healing.