GymOS — Multi-Tenant SaaS for Gyms & Fitness Studios
Built GymOS — an all-in-one gym management SaaS platform with multi-tenant architecture, class scheduling, QR check-ins, Stripe/PayPal billing, and a white-label mobile app for iOS and Android. Each gym gets its own branded portal, custom domain, and theme.
Client
GymOS
Project Value
$120,000+
Rating
The Challenge
Gym owners and fitness studio managers were stitching together five or six disconnected tools — spreadsheets for members, a separate booking system, a manual invoicing process, and a generic app that shared nothing with their brand. Every month brought missed renewals, double-booked classes, and payment follow-up that ate staff hours. What they needed was a single platform that handled everything, looked like theirs, and scaled from a single location to a national chain without re-engineering.
The Goal
Design and ship a production-grade, multi-tenant SaaS platform where each gym operates within its own isolated environment — complete with custom branding, its own domain, automated billing, class scheduling with waitlists, QR-code attendance, trainer management, and native iOS/Android apps for members.
Solution & Implementation
1Analysis
Conducted discovery workshops with gym owners, studio managers, and front-desk staff across three countries to map every operational touchpoint. Identified the seven core workflows that drove 90% of daily interactions — membership signup, class booking, attendance, billing, trainer scheduling, member communication, and reporting — and designed the platform architecture around them.
2Designing Solution
Architected a fully isolated multi-tenant system where each gym's data, branding, and configuration live in separate logical environments. Built a real-time dashboard with member growth charts, revenue tracking, and today's check-in counts that gives owners a genuine pulse on their business in under 30 seconds each morning.
3Customizing Business Logic
Delivered a frontend theme customisation engine that lets gym owners pick primary/secondary colours, set typography, and switch homepage layouts without touching code — all previewed live before publishing. Integrated Stripe, PayPal, and Razorpay for automated subscription billing with dunning, invoice generation, and payment reminders built in from day one.
4Scale & Optimize
Shipped native iOS and Android member apps with QR-code check-in, class booking, push notifications, and workout tracking. Built a POS module for retail product sales with multi-location stock inventory. Optimised the Laravel backend with query caching and indexed queries to sustain sub-200ms API responses under concurrent load from thousands of simultaneous gym sessions.
Results & Impact
Member Check-ins Tracked
Monthly Revenue Visibility
Onboarding Time
Payment Gateways
Platform Support
Multi-tenant isolation: each gym gets its own environment, domain, theme, and data — fully independent
White-label member app (iOS & Android) with QR check-in, class booking, and push notifications
Frontend theme engine: gym owners customise colours, fonts, and layouts with a live preview — no code required
Automated billing with Stripe, PayPal, and Razorpay — subscriptions, trials, dunning, and invoices handled end-to-end
POS module with multi-location inventory management for retail product sales
Real-time analytics dashboard showing member growth, revenue, attendance trends, and class fill rates
Key Technologies
Project Gallery
"GymOS turned what used to be a stack of spreadsheets and follow-up calls into something that just runs. Our front desk staff spend half the time on admin, our members book classes from their phones, and I can see exactly how the business is performing from my own dashboard. The QR check-in alone saves us 40 minutes a day."
James Hartley
GymOS
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