Math application -- 2

I am looking for a junior developer or student in India to build a comprehensive Android math learning app with gamified features.

Math topics to cover:
The app should cover all major math topics for the target student age/grade group, including:
• Arithmetic: addition, subtraction, multiplication, division
• Fractions, decimals, percentages
• Algebra: equations, inequalities, sequences
• Geometry: shapes, angles, area, volume
• Statistics and probability
• Word problems / applied math

Key features required:
• Competitions / challenges for students to compete individually or in groups
• Quizzes: multiple choice, short answers, and timed tests
• Progress tracking with points, badges, and levels
• Leaderboards to motivate learners
• User profiles storing progress, achievements, and performance history
• Optional: notifications for reminders, hints, or weekly challenges