ShaKit was developed to meet the demand of one-handed operation on mobile devices. Its primary feature consists of special detection system that allows intuitive shaking motions and simple finger gesture control to facilitate one-handed operations. Once it is activated, app icons automatically move within reach of the user's thumb. The intelligent analysis of user preferences and operational feedback enable quick selection of the target app. Coping with the growing demand for larger screens and portability of mobile devices, ShaKit can resolve operational constraints under any circumstances.