Cross-Platform Sync Notification App Development

I'm looking for an experienced app developer to create an application focused on synchronized notifications across multiple devices. The app should be compatible with both iOS and Android platforms. The primary goal is to implement push notifications, but in-app notifications can be considered if push notifications present challenges.

Key Requirements:
- Develop a cross-platform app for iOS and Android
- Implement push notifications for real-time updates
- Ensure in-app notifications as an alternative
- Achieve real-time synchronization of notifications across multiple devices

Ideal Skills and Experience:
- Proficiency in iOS and Android app development
- Experience with push and in-app notification systems
- Strong understanding of real-time data synchronization
- Ability to troubleshoot and provide solutions for cross-device compatibility

I'm eager to collaborate with a developer who can bring this project to life with seamless and efficient notification capabilities.