Development of Gymyg Fitness Coaching Platform

Gymyg was built as a fitness coaching and trainer marketplace platform.

The client wanted to create a product where fitness trainers could offer coaching services, manage clients, host sessions, and monetize their expertise, while users could discover trainers, book sessions, and track their fitness journey.

The main problem was that fitness coaching was happening through scattered channels like WhatsApp, manual bookings, offline payments, and unstructured follow-ups. The client needed one platform to bring coaching, booking, payments, and progress tracking together.

The challenge was to build a two-sided fitness platform that worked smoothly for both trainers and clients.

The platform needed to support:

Trainer onboarding

Client onboarding

Coach discovery and booking

Live sessions

Progress tracking

Payments and in-app purchases

Trainer monetization

Separate experiences for trainers and clients

Mobile-first usage for everyday fitness activity

It was not just a workout app. It needed marketplace logic, coaching workflows, payment flows, and engagement features in one product.

My approach was to structure Gymyg around two clear user journeys: one for trainers and one for clients.

For trainers, the focus was on making it easy to manage their coaching business. For clients, the focus was on making it simple to find the right coach, book sessions, and stay consistent.

The product was planned around:

Clear trainer and client roles

Smooth booking and session flow

Easy profile and service management for coaches

Progress tracking for clients

Monetization through payments and in-app purchases

Scalable marketplace structure

Mobile-first design for both user types

The goal was to make the platform useful both as a fitness marketplace and as a coaching management tool.

We delivered a fitness coaching platform with separate mobile experiences for trainers and clients.

Main features included:

Client mobile app

Trainer mobile app

User registration and login

Trainer profiles

Client profiles

Coach discovery

Session booking

Live coaching sessions

Progress tracking

Fitness goal tracking

Trainer availability management

In-app purchases

Apple Pay / Google Pay support

Notifications and reminders

Ratings and reviews

Admin-side management support

The platform was built with a mobile-first and scalable architecture.

Mobile App: React Native Backend: Node.js Database: Firebase / Firestore Authentication: Firebase Auth Payments: Apple Pay, Google Pay, in-app purchases Real-time Features: Firebase real-time updates Notifications: Firebase Cloud Messaging Cloud / Deployment: Firebase infrastructure

The final product gave the client a complete fitness coaching marketplace and management platform.

Key outcomes:

Trainers could manage their coaching services from one platform

Clients could discover coaches, book sessions, and track progress

The platform supported trainer monetization through payments and in-app purchases

Separate trainer and client apps made the experience role-specific and easier to use

Live sessions helped support remote coaching

Progress tracking improved client accountability

The product created a scalable foundation for future fitness programs, subscriptions, and coaching communities