Notch Pie

Notch Pie is an app which creates an overlay around the Notch of your device in order to indicate the current battery level. It works without needing any root access, and it has a high level of customization!

Also, it is open source and ad-free so your experience won't be cluttered with the app's usage.

Source code available here : https://github.com/Fly7113/Notch-Pie