kalk

When the built-in Windows Calculator is no longer enough for performing math calculations, especially if you need some more advanced functions like Pi or sine, you can check out kalk.

Made with the Electron framework, this is a straightforward and easy-to-use calculator that integrates some trigonometry functions like sine, cosine, tangent and cotangent, along with special operators like Pi or Euler's constant.

Installing the tool shouldn't take long, thanks to the fact that no out of the ordinary options are involved in the setup operation. As far as the interface is concerned, kalk looks like it was optimized for smartphones, having a rectangular window with large buttons placed vertically. It has a dark theme and colorful text displayed on the buttons to easily draw your attention when it comes to making math calculations.

You can enter data by clicking the buttons or pressing keys on your keyboard, as well as toggle numeric and trigonometric mode. Multiple entered expressions are displayed by the application, so they are placed one beneath the other .

Unfortunately, no other features are provided by this software utility. For instance, calculations are not recorded to history, so it's not possible to recall past entries. kalk is free and open-source, which means that anyone can look over its code as well as use it for personal projects.

As we expected, the program made calculations instantly during our evaluation, remaining light on system resources usage throughout its runtime. We haven't come across any issues in our tests.

Taking everything into account, kalk may not come bundled with a comprehensive set of options and configuration settings, but it delivers a simple solution for performing math calculations using trigonometric and other type of functions. It's also wrapped in a pleasant-looking interface that makes it fun to use.