Use this a lot. It's nice and simple and has exactly the tools you need (playback speed control, easy pause/play) and nothing more. Greatly prefer it over automatic transcription tools give you 40 pages of 'umm's and 'ahhhh's to filter through and edit.
People not used to AI have blind spots that prevent them from seing evident use case like this.
I'm always surprised at the amazed look of my friends when they see me concretely use the tool. They just didn't picture it until they saw it in action.
It's not even people not used to AI, I developed a tool that uses AI to do something, and then kind of couldn't be bothered to fix some of the output manually. It only occurred to me days later that I can ask the AI to fix it.