RJ Calculator is a scientific calculator with most basic functions like trigonometric functions, logarithms and base conversion. Also, statistic calculations like standard deviation and regression.
Cost / License
- Free
- Proprietary
Platforms
- Windows

kalker is described as 'A calculator with syntax highlighting that supports user-defined variables and functions, math-like syntax, and some more advanced operations such as derivation and integration (estimate), and complex numbers' and is a Calculator in the education & reference category. There are more than 25 alternatives to kalker for a variety of platforms, including Windows, Android, iPhone, Linux and Mac apps. The best kalker alternative is Wolfram Alpha, which is free. Other great apps like kalker are SpeedCrunch, Qalculate!, Numbat and Numara Calculator.
RJ Calculator is a scientific calculator with most basic functions like trigonometric functions, logarithms and base conversion. Also, statistic calculations like standard deviation and regression.

Easy to use scientific and graphing calculator with no ads! Advanced feature like finding zeros and intersections, as well as trigonometric functions!




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