So here's the another app for NCERT Students. A Complete solution for class 9 Mathematics. Chapter's Details-

Chapter 1 - Number Systems
Chapter 2 - Polynomials
Chapter 3 - Coordinate Geometry
Chapter 4 - Linear Equations in Two Variables
Chapter 5 - Introduction to Euclids Geometry
Chapter 6 - Lines and Angles
Chapter 7 - Triangles
Chapter 8 - Quadrilaterals
Chapter 9 - Areas of Parallelograms and Triangles
Chapter 10 - Circles
Chapter 11 - Constructions
Chapter 12 - Heron's Formula
Chapter 13 - Surface Areas and Volumes
Chapter 14 - Statistics
Chapter 15 - Probability