Battery Voltage Notifier is an Android application developed by Glee Factory that falls under the category of Utilities & Tools. It is a free program that helps users estimate the available charge level of their device's battery by providing them with the current battery voltage state.

The application is simple and easy to use, with a straightforward interface that displays the current battery voltage in real-time. This feature can be particularly useful for users who experience problems with their device's state of charge estimation algorithms due to factors such as battery aging or environmental temperature changes.

Additionally, Battery Voltage Notifier does not require any special permissions and runs in the background, providing users with continuous updates on their device's battery voltage state without causing any significant battery drain.

Overall, Battery Voltage Notifier is a useful tool for Android users who want to keep track of their device's battery voltage state and have a better understanding of their device's available charge level.