TL;DRGoogle’s Android Pulse app is starting to appear as an available update in the Play Store.The background service appears to detect unusual resource usage, such as apps suddenly consuming too much battery, memory, or processing power.Android Pulse isn’t new; builds date back to March, and the Play Store shows more than 10 million downloads.There are plenty of Google apps you probably use every day, but Android Pulse is definitely not one of them. In fact, you may not even know it exists. That could change soon, though, because this mysterious system app is suddenly showing up as an available update in the Play Store.As first spotted by 9to5Google, Android Pulse is a Google-made app that works behind the scenes. Its job appears to be pretty simple: keep an eye out for apps or parts of Android that are using your phone’s resources in unusual ways.