Here is a bit of KDE software which I was not aware of. It was not included in Debian 11 (Bullseye) — you had to build it from source or use third-party packages… However it was officially packaged starting with Debian 12 (Bookworm) and newer.
Here it is, running it on Kubuntu 25.04:
Excellent little tool for those who don’t want to benchmark disks in the terminal via dd / fio. Nothing wrong with healthy feature parity & easy of use!