Scalable Gym Management Platform Development

I am writing to request a proposal/quote for the development of a gym management system based on the following project specifications: 1.⁠ ⁠Web App for Gym Staff - Gym sign-up and configuration settings - Staff login with role-based access (Owner, Front Desk, Trainer) - Member management, membership plans, and renewals - Membership freeze options, upgrades, and discounts - Tracking payments, invoices, and expenses (recording cash, UPI, or bank transfer) - Attendance tracking via biometric devices (ZKTeco/eSSL), QR code, or manual entry - Class scheduling and booking - Lead/Enquiry management with a daily follow-up list - Custom workout and diet plans created by trainers - Owner dashboard, detailed analytics/reports, and Excel/CSV data exports - Support for both light and dark modes 2.⁠ ⁠Member Mobile App (iOS & Android) - Sign-in via One-Time Password (OTP) - View membership status, expiry dates, and payment history - Attendance check-in via QR code - Class booking feature - Access to assigned workout and diet plans - Push notifications for upcoming renewals and general gym updates 3.⁠ ⁠Preferred Technology Stack - Web App: Next.js (TypeScript) - Database: PostgreSQL - Mobile App: React Native (Please let us know if you suggest an alternative tech stack based on these requirements). 4.⁠ ⁠Project Scale & Growth - Initial Launch: 1 gym (approximately 500 members) - By 2027: Scaled to approximately 25 gyms - Long-term Goal: Scaling up to 100 gyms Please let me know your availability for a call to discuss the timeline, estimated budget, and any initial feedback you might have on these requirements. Looking forward to hearing from you. Budget: INR 12500–37500