Khan Sir GK GS is an Android application developed by Patel DigiTech that provides a vast collection of study material for various competitive examinations. This free app offers quality study material from subjects like World GK, India GK, General Science, Geography, History, Sports GK, Economics, Culture, Computer, and more.

The app is available in Hindi medium, making it convenient for Hindi-speaking students to use. It is a useful tool for students preparing for competitive examinations such as SSC, UPSC, PSC, VYAPAM, banking, and other state government jobs. Khan Sir GK GS also offers extra study material that is not available from Khan Sir GK GS classes, making it a comprehensive source of information for students.

Overall, Khan Sir GK GS is a great app for those who are looking for a comprehensive study material for their competitive examinations.