Fitness App Development

I'm looking for an experienced app developer to create a comprehensive fitness app focused on workout tracking.

Key functionalities include:
- Exercise Logging: Users can log their workouts.
- Progress Charts: Visual representation of user progress.
- Custom Workout Plans: Tailored workout plans based on user preferences.

Integration is crucial with:
- Wearable fitness trackers
- Third-party fitness apps
- Smartphones' native health data

Ideal Skills & Experience:
- Proficiency in mobile app development (iOS and Android)
- Experience with API integrations, especially for fitness devices and apps
- Strong background in UI/UX design for intuitive user experience
- Knowledge in data visualization for progress charts
- Familiarity with health and fitness industry trends

Please provide examples of previous work and relevant experience. Looking forward to your proposals!