Mobile App Gamification Design

I'm looking for a skilled designer to create a comprehensive wireframe, prototype, and UI/UX design for a gamified mobile app focused on skill and self-assessment. The app will be developed for both iOS and Android platforms.

Key Features:
- User Profiles
- Quizzes and Tests
- Progress Tracking
- Profile and other User screens

Ideal Skills and Experience:
- Expertise in mobile app design for both iOS and Android
- Strong background in gamification elements
- Proficiency in creating intuitive and engaging user interfaces
- Experience with wireframing and prototyping tools
- User experience research and testing

Please provide a portfolio showcasing similar projects.