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.
Gone - An ephemeral to-do list
Accubattery - Monitor's battery capacity through the use of science
Streaks - The to-do list that helps you form good habits.
Power Battery - Power Battery, as the most professional battery saver app, could get up about 60% more battery life for Android phones or tablets.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.