Battery Indicator is a macOS app that shows the remaining battery time in your menu bar.
Battery Health 3 for Mac is a professional battery monitoring utility for viewing vital statistics about your MacBook's and iOS device's battery, such as power level, heath, capacity, temperature, charge cycles and more.
Greenify help you identify and put the misbehaving apps into hibernation when you are not actively using them, to stop them from lagging your device or leeching the battery, in a unique way! They can do nothing without explicit launch by you or other apps, while still preserving full functionality when running in foreground.
Subchat is an app that lets you find like minded people to message about the topics you love to talk about!