Cross-Platform Lesson Planning App

I need a teacher for teaching app developed for both iOS and Android platforms.
Person need be able to teach from very basic.
Main target is student.

Key requirements:
- User-friendly interface for creating and organizing lesson plans
- Ability to categorize lessons by subject and grade
- Option to add notes, resources, and multimedia to lesson plans
- Secure login and user authentication
- Cloud storage for saving and accessing plans

Ideal Skills and Experience:
- Proven experience in mobile app development for both iOS and Android
- Strong UI/UX design skills
- Experience with cloud storage solutions
- Familiarity with educational tools and needs

Please provide samples of similar work done.