Accubattery - Monitor's battery capacity through the use of science
Chronus Widget - Chronus: Home & Lock Widget is a flexible, stylish widget application that offers hundreds of widgets for your home and lock screen.
GSam Battery Monitor - Monitor your android devices battery usage.
DashClock Widget - DashClock Widget is one of the best Widget application that offers tons of clock and weather widgets to make your screen stunning and interesting.
Greenify - Greenify is a mobile app that gives you greater control over your Android device's power usage, allowing you to get a lot more mileage out of your battery life without having to constantly plug it back into a charger.
Weather Wiz: Forecast & Widget - Weather Wiz: Forecast & Widget is one of the best Weather apps for Android devices that offer accurate weather details.