Android based smartphone users’ privacy has been a hot issue recently in public concerns due to various instances of security attacks and privacy leakage on Android platform. Android existing security has been built upon a permission based mechanism which restricts critical resources accesses of third-party Android applications. This permission based security system is widely assessed for its major control of application permissions and critical management of permissions by developers, marketers, and endusers. Considering the critical management of permissions some previous research papers proposed automatic permission management tools. But those automatic tools never assessed end user’s expectation about permissions perfectly. This paper presents a tool, SDroid (Secured anDroid) that assesses the best permissions management based on end users opinion. SDroid evaluates requested permissions and allow users selectively grant permissions considering his/her knowledge level depending on the opinion.