Factor in having to instruct everyone to download the app and create an account rather than just go to a URL you can access from any device anywhere and put in your show/movie/song and in a few minutes you have it.
You don't have to download an app for Overseerr to add things. It's just a URL you can access from any device anywhere (assuming you've got a domain etc like you must for your web app) and put in your show/movie and in a few minutes you have it.
Overseerr doesn’t monitor my services either, or whatever else I want to do.
It does when you set it up.
No skin off my back, don't use it for all I care - I was just pointing out that a fantastic ready made service already exists for that.