Mobile battery life and device performance concerns have jumped back to the fore after Apple was caught throttling the performance of older devices to reduce wear and tear on aging batteries. (The company is now offering $29 battery replacements if you've got an iPhone 6 or older.) Equip your phone with a good battery monitoring app, and you can get detailed information on the state of your battery's health. Some of these apps even come with power saving features that help you configure device settings in order to maximize your battery life. Check out 14 of our favorite battery apps.
Back-end changes to iOS 10 onwards have made it more difficult for apps to access detailed battery technical info, but there are still ways to check out battery wear and other statistics, such as through Coconut Battery. The free utility allows users to pull up stats such as current charge and charge capacity vs design capacity, charge cycle counts, and battery temperature for an iPhone or iPad plugged in to your Mac. An upgrade to a premium version allows you to check battery stats wirelessly (if Wi-Fi syncing is enabled through iTunes); there's also an info viewer for other device settings.
Battery Doctor is a free and feature-packed battery monitor and energy saving tool for mobile devices. Battery Doctor allows users to quickly look up battery charge status as well as track down what apps and processes are draining battery life. You can quickly toggle power-hogging settings from within the app and its widgets, such as brightness, Wi-Fi, GPS, Bluetooth and mobile data (though you should probably skip the Task Killer). A particularly useful feature is the ability to define power saving profiles and automatically schedule them, so that, for example, you can set the phone to automatically switch to airplane mode when you're asleep or in class.
Battery Saver 2017 is another app that combines a variety of battery-saving system features and settings to provide quick and easy profiles that should help extend your how long your phone lasts on a charge. The main screen displays battery life, a power saver mode switch, toggles for a variety of device settings and assorted battery stats and expected runtimes. In addition to the power-saving mode, a sleep mode deactivates most device radios, and a custom mode lets you configure a variety of settings for your own power use profile. Users can also schedule power-saving modes for particular times, like work, sleep and so forth.
Power Battery combines a variety of tools into one package, serving as a battery monitor, battery saver and fast charging tool. The app lets you view battery consumption data, including which apps blow through the most power over time, while a variety of power saving settings and presets let you tweak your settings to eke out the most time from your available juice. Finally, a charging tool kills background apps and provides a charge time estimate while plugged in. Extras include a memory booster and junk file cleaner.
PowerPro is a battery monitor and energy saving app that provides useful info about the state of your battery's health, as well as a variety of ways to conserve energy throughout a full day of use. The battery monitor features provide data on your charge status, battery temperature, and battery capacity, as well as estimates of how long your charge will last with a variety of average use cases, such as gaming or media. On the energy saving side of things, PowerPro comes with a background task killer, customizable performance profiles that can trigger based on time and location, and a screen saving feature that cuts brightness to save power.
Another popular battery monitor and power saving Android app is DU Battery Saver & Widgets, which comes with a convenient control widget and one-touch power optimization. The app comes with convenient smart presets for saving battery life, with the option to create user-defined modes, as well as a battery charge-state monitor and tools for viewing app power usage. A Pro upgrade unlocks more advanced features, such as the ability to schedule the power-saving presets, an automatic task killer and the option to tune the CPU frequency of rooted phones.
Avast's been expanding their mobile app offerings, and now include their own Avast Battery Saver to provide simple power-saving optimizations. The app features a background task killer, five configurable power consumption profiles (work, home, night, emergency and an adaptive smart mode), an app viewer, and notifications suggesting changes in profile. A neat touch is that each power profile comes with optional auto-triggers, such as connecting to particular Wi-Fi networks for Work or Home profiles, time of day for Night mode, or power level for Emergency power saving mode. It does feature a lot of ads for Avast apps and others.