Medical MCQ Quiz App Development

I'm seeking an experienced mobile app developer to create a quiz app specifically for doctors in Sudan. The primary function of the app will be to administer Multiple Choice Questions (MCQs) with explanation, study mode, exam hall made according to different medical specialities. A subscription feature should be implemented, payment method should be through local bank transfer and uploading screenshot of payments.


Key Requirements:
- User Authentication: Secure login and profile management for doctors.
- MCQ Database: A comprehensive question bank covering various medical topics.
- Quiz Functionality: Ability to take quizzes, track scores, and review answers.
- User Interface: Intuitive design for ease of use.
- Performance Tracking: Analytics to monitor progress over time.
- weekly leaderboards of all users.
- Admin panal: a panel where admin accounts can edit the mcqs banks, review the subscription offers and details, reviews the users details such as: name, email, phone number, date joined, subscription status, delete, ban, give free access, give limited time access.

Ideal Skills and Experience:
- Proficiency in mobile app development (iOS and Android).
- Experience with database management.
- Strong UI/UX design skills.
- Familiarity with security protocols for user data protection.

Please provide your portfolio and relevant experience.