Gym Service Booking App Development

I'm seeking an experienced developer to create a comprehensive service booking application for gym services. The app will be available on Android and iOS, with different panels for customers, vendors, and admins.

Key Requirements:
- Customer Panel (Android + iOS)
- Vendor Panel (Android + Web)
- Admin Panel (Web)

Essential Features:
- Class Scheduling
- attendance using QR
- Trainer Appointments
- Membership Management

Ideal Skills & Experience:
- Expertise in mobile and web app development
- Experience in service booking platforms
- Strong UI/UX design skills
- Familiarity with backend development and database management

Please provide examples of similar work done and an estimated timeline for completion. Looking forward to your proposals!