It is a solution for this problem: https://news.ycombinator.com/item?id=31632137
From app description:
"Notifications will be cleaned automatically based on your input. Select the package name of an app and enter the message text (regular expression) of the annoying notification and you'll never see it again."
It however lacks ability to export / import filters so they need to be created manually.
Also the app is not longer updated. I hope at some point somebody will create open-source clone of it with more features.
E.g I want uber to tell me when food or my driver is arriving, but I want them to fuck off from spamming me about discounts or other nonsense. This app allows me to keep for the former but block the latter.
* Discounts and news
* Account and trip updates
* Location use preferences
* Trip suggestions and reminders