Smart Calc for Hide Photos,Videos,Audios,notes and contact in your phone. Hide your photos,videos,audio,notes and contacts from your photo gallery and access them easily using a secret password. You can easily share your phone with anyone without worrying about privacy. You can find the app from app store as "Smart Calc" which Disguises itself as an Scientific Calculator app which can be used to calculate your Trigonometric functions and simple calculation as well, and one more option of lock