HeadsUp is an Android app developed by Artem Chepurnoy, which focuses on displaying notifications while the device is on. It is a fork of AcDisplay but with added features that allow users to stay up-to-date with their notifications while browsing, gaming, or watching movies. The app displays a minimalistic and beautiful popup that lets users open notifications directly or perform an action.

The app has a great design and provides awesome performance, making it a must-have for anyone who wants to stay informed without being constantly interrupted by notifications. It has been translated into all of the most popular languages, ensuring that it can be used by people all around the world. Moreover, the app is incredibly stable and completely open-source, which gives users the freedom to customize it as per their requirements. With its user-friendly interface and useful features, HeadsUp is a great addition to any Android device.