Security is main concern nowadays for our app .we want to secure our apps from hackers and also want it to be more complex to understand by anyone.To achieve this we use Obfuscation in Android .So lets start with brief information about Obfuscation. What is Obfuscation: According to the Oxford dictionary, obfuscation denotes that the action of making something obscure, unclear, or unintelligible. In software, the obfuscation of code is the process of modifying an executable so that it is no longer useful to unauthorized parties such as hackers but remains fully functional. Or in other ways we can say that To protect trade secrets, processes, unauthorized access, vulnerability discovery and bypassing licensing or other controls can be done by using obfuscation. Advantages of Using Obfuscation: 1. Optimized Code is one of the most important feature of using Obfuscation the code become more optimized after applying Obfuscation. 2. Security is also a feature of Obfuscation .By using