Educational Subscription App Development & Content Creation

I want to hire an experienced developer or development team to build a subscription-based educational Android app for HPBOSE (Himachal Pradesh Board) and CBSE students. The app should support Classes 1–12, Hindi and English medium, and include: - Mobile number and OTP login - Board → Medium → Class → Subject → Chapter navigation - Educational videos for chapters and textbook exercises - Video player with playback speed, quality settings, and resume playback - Monthly, yearly, and class-wise subscriptions - UPI and other suitable payment integrations - Free demo chapters, search, bookmarks, and student progress tracking - Offline downloads with appropriate content protection - Push notifications - Web-based admin panel for managing videos, curriculum, users, subscriptions, offers, and reports - Secure backend, database, and video hosting - Assistance with Google Play Store publishing The project also requires educational video content in Hindi and English, using simple explanations, examples, animations, and visuals. Content must be checked against the relevant textbooks and syllabus. **Budget: ₹75,000–₹1,50,000 INR.** Please provide separate quotations and timelines for app development and educational video production. Explain how much functionality and content can realistically be delivered within this budget. Please include relevant portfolio links, previous educational app projects, sample educational videos, team details, technology stack, maintenance costs, and proposed delivery milestones. I prefer a professional developer or team that can demonstrate previous work. The project will be awarded based on portfolio, realistic pricing, quality, and a clear milestone-based delivery plan.