Hi Nikhil,
Thank you for your feedback :)
You can learn more about app development in Python, please check this book which discusses how CoinTex works from A to Z: https://www.amazon.com/Building-Android-Python-Using-Studio/dp/1484250303
You can also find the source code of the game at GitHub: http://github.com/ahmedfgad/CoinTex
Thank you!