This course will take you through step-by-step instructions for developing an Android App for solving nonlinear mathematical equations using a famous ‘Newton’s Method’. We first provide a detailed description of Newton’s Method with handwritten calculations and set a stage to discuss the algorithm behind this method. Finally, this algorithm is implemented in JAVA programming language for Android Application development. This application is deployed on Google’s Play Store to ready-to-use App in Android. Thus, students systematically first learn about Newton’s Method followed by its implementation & deployment in Android devices across the board. Understanding of Newton’s Method can be considered as a first-step towards learning a more advanced optimization algorithms, such as Gradient Descent Algorithm widely used in Machine Learning applications.