Multi-User Education App Development

I'm seeking a talented app developer to create a comprehensive education app for both iOS and Android platforms. This app will cater to both students and teachers, featuring distinct account types for each.

Key Features:
- Creation of student and teacher accounts: The app will require a registration and login system that differentiates between the two user types.
- Video streaming: The app will host educational videos. These videos must be streamed, not downloaded, to ensure premium content is accessible only to subscribers.
- Interactive worksheets: The app will include worksheets that encourage user interaction and engagement.

Content Access: The app will operate on a subscription-based model. This will require the development of a secure payment system and subscription management interface.

Ideal Skills and Experience:
- Cross-platform mobile app development
- Experience with creating multi-user educational apps
- Knowledge of implementing video streaming and interactive content
- Previous work with subscription-based models and secure payment systems

Please provide examples of similar projects you've worked on in your proposal.