GONGYIXING® Calculator app for iPhone and iPad

The Calculator has a simple interface and has the following functions:
1. Completely present calculation expressions, just like in textbooks
2. Adapt to a variety of iOS devices, can be used as missing calculator in the new version iPad
3. Perform simple arithmetic operations, input basic constants and random numbers
4. Angle and radian mode switching
5. Support cache function
6. Perform advanced operations involving powers, square roots, exponents, logarithms, trigonometric functions, power operations, etc.
7. Freely customize the decimal separator, calculation method, maximum number of digits in the decimal part, etc.
8. Support the horizontal and vertical orientation of the screen to lock or automatically adapt
9. Fast switching of multi-language interface
10. Support a variety of skin options, dark mode, bright mode, etc.
11. Support human voice reading of calculation results, optional speech speed, etc.
12. Support the copy of calculation expressions and calculation results
13. Calculation history function
14. Unit conversion function

Lets calculate!