Comprehensive iOS Health Tracking App

I'm looking to develop an iOS mobile app for comprehensive health and wellness tracking. The primary focus should be on weight loss and workouts, with robust integration with several third-party apps.

Key Features:
- Track weight loss progress
- Monitor workouts
- Integrate with Apple Health, MyFitnessPal, Peakwatch, Hevy, and Shotsy

Ideal Skills and Experience:
- Proven experience in mobile app development, specifically for iOS
- Strong background in health and fitness app integrations
- Familiarity with Apple Health and other mentioned third-party apps
- Ability to create user-friendly, engaging interfaces
- Experience with data security and user privacy

Please share past projects and related experience.