Vedic Math Practice App Development

I'm seeking an experienced Android developer to create a Vedic math practice and quiz app.

Essential features:
- learn from pre recorded videos along with practice and quizzes
- Quiz formats: after watching a video, quiz once correct answer next video, until then rest of the videoes should be locked.
- Instant feedback on quiz answers

Ideal skills and experience:
- Proven Android app development expertise
- Experience with educational apps
- Strong UI/UX design skills
- Ability to implement real-time feedback systems

Please provide samples of similar work. Looking forward to your proposals!