Interactive Gym Class Booking Web App

I'm looking to develop a web application that enables users to book classes at gyms in our network based on their location and class availability.

Key Features:
- User Subscription: A monthly fee allows users to pick a gym and book classes.
- Class Booking: The primary purpose of the app is to facilitate booking of classes.
- Location-Based Services: Users should be able to find gyms and book classes based on their proximity.

Authentication:
- Social Media Login: I prefer a simple and quick login process via social media platforms rather than traditional email and password setups.
- Platforms: The social media logins should include Facebook, Google, and Apple.

Ideal Skills and Experience:
- Web Development: Proficiency in building interactive and user-friendly web applications.
- Location-Based Services: Prior experience with implementing GPS or location-based services in an app is a plus.
- Social Media Integration: Expertise in integrating social media logins, particularly Facebook, Google, and Apple.

Please provide examples of similar projects you've completed in your proposal.