hotjar's functionality is cool. i've thought about getting a screen recordings/heatmaps tool up and running on a webstudio site just to test the implementation, but i don't have any traffic at the moment. webstudio.is source shows they're not using it, or any other similar tool as far as i can tell... but it's sort of expensive these days and closed software which seems outside the ethos around here, if a free / open source alternative is interesting i like Clarity by Microsoft for that:
https://clarity.microsoft.com/