[Sylos]

They are somewhat moving away from calling everything and the kitchensync something with K, but the calculator is still called KCalc.

Luckily, the search has gotten a lot better, so it will actually find KCalc when you type in "calculator".

You can also type "1+1" into the search bar and it will tell you the result right there.

And there's also an option to have the menu show applications with their generic names. So, for example "File Manager" instead of "Dolphin". Depending on the distro, this option may be default-on, too.

And now would be a good time to try it again, by the way. The last three years were spent with a major rewrite. Now it has most of the features that you'd expect from a KDE again, is stable and has been stable for long enough that most distros actually have a stable version in their repos (even Kubuntu is decent for once.)