How do you manage your multiple online subscriptions? (Netflix, other services, etc)

Hello Community, these days, we're in a flow of annual or monthly subscriptions that keeps getting bigger by the day. Whatever your profile (indie service FlutterFlow, or Netflix, Spotify). I have an idea to make a web application that will allow you to group all your subscriptions into one application that will notify you according to the parameters you have chosen (how many days you want, etc) as well as an analysis that, depending on your response, will tell you which subscription you can reduce because you don't need it or deactivate. Thank you in advance for your reply and thank you for the debate! And I will see if I can work on that. !