Fitness Program App Development

I'm looking for a skilled app developer to create a fitness program app. The app will feature:

- Various fitness programs: strength training, cardio workouts, yoga and flexibility, and boxing.
- Access to pre-recorded videos guided by professional instructors.
- Subscription-based access to all programs.

Ideal skills and experience:
- Experience in developing subscription-based apps
- Strong UI/UX design skills
- Knowledge in video integration
- Background in fitness or wellness apps is a plus.

Please include a portfolio with relevant projects.