Custom Personal Management App Development

I'm looking for a skilled developer to create a custom personal management app for both iOS and Android platforms. The app should include:

Core Features:
- Budgeting tools
- Task management
- Personal information storage

Additional Features:
- Calendar integration
- Reminders and notifications
- Data synchronization across devices

The goal is to provide a seamless experience that helps users organize their lives efficiently.

Ideal Skills and Experience:
- Strong background in app development
- Experience with both iOS and Android platforms
- Ability to work collaboratively and refine features based on user feedback
- Strong UI/UX design skills for a user-friendly experience

Please share your portfolios and relevant experience.