iOS App Development

I'm looking for an experienced iOS developer to create a robust application. The app's purpose, core functionality, and target audience are still being defined.

Ideal Skills and Experience:
- Proven track record in iOS app development
- Proficiency in Swift and Objective-C
- Experience with user authentication and in-app purchases
- Knowledge of push notifications implementation
- Strong UI/UX design skills
- Familiarity with App Store submission process

Please provide examples of your previous work and your approach to app development.