Grade - Pumb is a free utility tool developed by Pozzo Apps for Android devices. As the name suggests, it is a simple app that helps you to check the floor or things angle. The app is straightforward to use and requires no technical knowledge.

The app has a user-friendly interface and is incredibly lightweight, taking up almost no space on your device. However, it is essential to note that the precision of the app may vary between different phones. Overall, Grade - Pumb is an excellent tool for anyone who needs to check the floor or things angle quickly and efficiently.