OmniCounter app for iPhone and iPad

Its a Fully Functional Calculator that supports basic, scientific, trigonometry, algebra, calculus, combinatorics, datetime, economics, geometry, matrix, vector, number theory, statistics, and so on.
· This App is permanently ad-free.
· This App uses a powerful computing engine to support up to a dozen categories of computing, including basic, scientific, trigonometry, algebra, calculus, combinatorics, datetime, economics, geometry, matrix, vector, number theory, statistics, and more.
· This app provides a customized keyboard that supports automatic completion and parameter prompts. In addition, the app also supports the system to include input from other third-party keyboards.
· This app supports binary, octal, decimal, binary, and hex inputs and outputs.
· This app beautifies the input expressions in different colors and spaces.
· This app offers optional historical features (on by default).
· This app supports the copying of inputs and outputs.
· This app provides a number of configurable parameters.
· This app was ingeniously built all by myself.