Best Battery Saver Apps for Android (2026)

This is the first app we install on any new phone. AccuBattery measures charge and discharge so you finally see which apps drain the most and how healthy your battery is. The alarm that pings you at 80 percent, to reduce long term wear, is the standout. It runs quietly and is free with a tasteful pro unlock. It will not save power alone, but it transforms how you charge.

The classic that still works. Greenify hibernates misbehaving apps the moment you lock the screen, so they stop waking your phone in your pocket. On a non rooted device it leans on Android accessibility, and it suits patient tinkerers who do not mind a short setup. It is free with an optional donation tier. We saw the clearest overnight drain improvement on older phones running chatty social apps.

Made by the developer behind popular Kernel tweaking tools, Battery Guru is a clean, ad light monitor that tracks charging speed, temperature, and per app wakelocks. It nudges you to charge between 20 and 80 percent and shows deep sleep stats at a glance. Most of it is free, with a cheap unlock for charging alarms. We like that it just reports honest numbers without drama.

Naptime forces Android into its aggressive Doze power saving mode the instant your screen goes off, rather than waiting the usual hour. For a phone that sits idle on a desk all day, this is the most effective free tweak we tested. It needs a quick ADB command or root to grant permissions, so it suits the hands on crowd. The standby drain drop afterward genuinely surprised us.

Servicely takes a sniper approach. Instead of killing everything, it lets you pick specific background services and stop them on a schedule while the screen is off. That precision avoids the slowdowns that crude task killers cause. It is free, works best with root for full effect, and rewards a little reading. We reach for it when one stubborn app keeps a wakelock alive no matter what else we try.

This is the diagnostic deep dive for when a phone drains and you cannot figure out why. BetterBatteryStats logs every wakelock, alarm, and process keeping the CPU awake, then ranks the culprits clearly. It is a paid app aimed at power users and bug hunters, not casual savers. We have used it to trace a mystery 10 percent overnight loss back to a single rogue app within minutes.

A friendlier cousin to the heavy diagnostic tools, Wakelock Detector shows you, in plain language and with app icons, exactly what is stopping your phone from sleeping. You do not need to be a developer to act on what it finds. The app is free, and pairing its results with a hibernation tool closes the loop nicely. A great way to learn why your battery behaves as it does.

Not a battery app on paper, but one of our favorite ways to save power in practice. MacroDroid lets you build simple rules, like dropping brightness and turning off Wi Fi when the battery hits 15 percent. The visual editor is genuinely beginner friendly. It is free for up to five macros, with a one time unlock for unlimited. Automation beats babysitting settings all day.

Easy to overlook because it ships on most phones, yet its Bedtime mode is a quiet battery hero. Switching the screen to grayscale and muting notifications overnight cuts the small drains that add up by morning, and it stops you doom scrolling too. It is completely free and already installed on stock Android. We turn it on, forget about it, and wake up to a noticeably fuller battery.

Brevent is the precision tool for people who want Greenify style control without an always on background service of its own. Set up over ADB, it prevents chosen apps from running in the background and silences their wakeups with very little overhead. It is free, firmly aimed at the technical user, and beautifully lightweight. On phones with pushy preinstalled apps, it gave us the steadiest standby battery of anything here.