Battery Progress Widget is a free Android application developed by Plague.cz that offers a simple and customizable widget to monitor the battery percentage of your device. This widget comes with a progress bar that shows the battery percentage and an option to display additional information such as battery temperature and voltage in text format.

One of the best features of Battery Progress Widget is its customizability. It offers many options to configure the widget's looks, including the colors of the background, text, progress bar, and progress bar shadow. Users can also adjust the size and position of the progress bar and text according to their preferences. Additionally, the app provides six background images to choose from, and users can also adjust their opacity.

However, it is worth noting that the app requires INTERNET and ACCESS_NETWORK_STATE permissions due to AdMob ads, which are only displayed on the configuration screen. Overall, Battery Progress Widget is an excellent tool for those who want to monitor their device's battery percentage in a simple and customizable way.