Fitness Tracker App Development

I need a skilled app developer to create a fitness app focused on workout tracking. The app should also integrate with fitness trackers.

Key Requirements:
- Primary functionality: Workout tracking
- Integration with fitness trackers

Ideal Skills and Experience:
- Proven experience in mobile app development
- Expertise in workout tracking functionalities
- Experience with fitness tracker integration
- Strong UI/UX design skills for a user-friendly interface

Please provide examples of similar work done.