iOS Productivity App Development

I'm seeking an experienced mobile app developer to create a productivity app for iOS.

The app should be intuitive, user-friendly, and feature-rich to enhance users' productivity.

Key Requirements:
- Customizable task lists
- Calendar integration
- Reminder notifications
- User analytics dashboard
- Offline access
- Secure data storage

Ideal Skills and Experience:
- Expertise in Swift and iOS development
- Proven track record in building productivity apps
- Strong UI/UX design skills
- Experience with backend integration and data security
- Good communication and project management skills

Please share your portfolio and relevant experience.