CalcKit: All-in-One Calculator

CalcKit is a comprehensive mobile application designed to provide a wide range of mathematical tools, including over 150 unique calculators and unit converters. Originally developed by Ivan Gavrilov, the app was launched around 2017–2018 to serve as a versatile solution for students, professionals, and everyday users needing complex and simple calculations on the go.

The development and management of the app are centered around its original creator and developer team. While various entities like Singxi Limited and Akkyra Systems appear in app store listings for specific versions or localized distributions, the brand remains primarily associated with its founder. As a digital product, it does not have a physical manufacturing location but is maintained through continuous software updates and developer support from the Hong Kong and international development landscape.