MicroPinner for Android is one of those apps that just solves a particular problem in a straightforward, non-bloated way. In this case, MicroPinner is for when you want to create a custom notification.
MicroPinner lets the user set a title and content for the notification, and then set priority and visibility, and that’s about it. Very low footprint that just does one thing and does it well.
The app is open source and developer Lukas Wolfsteiner has made the code available in a Github repository.