Event Registration Mobile App

I need a mobile app for event management, primarily focusing on event registration and ticketing. The app should be available on both iOS and Android platforms.

Key Features:
- Event registration and ticketing
- QR code tickets
- Group registration options

Ideal skills and experience:
- Mobile app development for iOS and Android
- Experience with ticketing systems
- Knowledge of QR code integration
- UI/UX design skills for a user-friendly experience