There’s a particular kind of irritation that comes from watching your battery drain in real time. Even with Adaptive Battery, power saver mode, and every background restriction you can think of, some Android phones still burn through power faster than they should. And while the Play Store is packed with apps claiming to “improve battery life,” most of them just force-stop apps and end up breaking notifications or causing other issues.
I eventually came across SaverTuner, which felt noticeably different. It’s open-source, and instead of working against Android’s power system, it works with it. The app exposes deeper battery management controls that Android already has, but doesn’t normally expose.
- OS
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Android
- Price model
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Free
Extend your phone’s battery life with SaverTuner’s smart power optimization profiles. Choose the level of saving that fits your day and keep your device running longer.
SaverTuner is a lightweight app that helps your battery last longer
A tiny app with a strangely big impact
SaverTuner doesn’t try to change the way Android manages power. Instead, it gives you a straightforward interface for adjusting system power profiles and CPU behavior. Your phone already uses these efficiency modes, but usually only when the battery is low. SaverTuner lets you apply them whenever you want, or tailor them to match your daily usage.
The app isn’t running heavy background services, polling your system, or sending constant alerts, which is an approach that sidesteps the problems that led to task-killer apps being restricted in Android 14. You open it, set your configuration, and it steps aside. That alone makes it more effective than the typical “battery saver” apps, which often end up using power just to monitor power.
Another key difference is that it doesn’t freeze apps or block notifications, echoing the point that constantly closing apps doesn’t save battery. Many battery apps overdo it by aggressively killing background processes, which can disrupt messaging apps or delay alarms. SaverTuner avoids this entirely by working at the system level rather than shutting down apps.
The biggest improvement I noticed was in standby drain. I typically lose around 8 to 12 percent overnight, but with SaverTuner, that dropped to around five to six percent. It’s a noticeable difference if you’ve dealt with hidden background drain on Android.
You don’t need root access to use SaverTuner
Your warranty remains perfectly untouched
SaverTuner requires the WRITE_SECURE_SETTINGS permission, which can be granted using either ADB (Android Debug Bridge) via a PC or root access. Rooting isn’t required, so there’s no need for concern, as the ADB method works perfectly well. You don’t need any developer experience. Here’s how the process works:
First, download the Android Platform Tools from Google’s official website and extract the folder to a location that is easy to find, such as your desktop. This gives you the ADB tool you need.
Next, enable Developer Options on your phone by going to Settings -> About phone and tapping Build number seven times. Then head to Settings -> System -> Developer options and toggle on USB debugging.
Connect your phone to your computer with a USB cable. When prompted on your phone, tap Allow USB debugging and check the box to always allow your computer.
Now, for the computer side: navigate to the platform-tools folder you extracted earlier. On Windows, hold Shift, right-click inside the folder, and select Open PowerShell window here. On a Mac or Linux system, open Terminal and navigate to the folder using the cd command. Type .\adb devices (on Windows, you need the .\ prefix in PowerShell) or just adb devices on Mac/Linux. If you see your phone’s serial number, you’re connected.
If you prefer to avoid using a PC entirely, check our guide on how to run ADB commands on Android without a computer.
Finally, run this command exactly as shown in the app:
.\adb shell pm grant –user 0 s1m.savertuner android.permission.WRITE_SECURE_SETTINGS
Press Enter, and you’re done. The app will confirm that the permission is granted, and you can start customizing your battery profiles immediately.
SaverTuner offers customizable profiles from light to extreme optimization
Because not all battery days are the same
Now this is where SaverTuner truly shines. The app allows you to create and switch between different battery saver profiles, ranging from light daily optimization (which barely affects the user experience) to extreme power saving, which maximizes battery life as much as possible. Each profile includes a clear explanation of what changes it makes, so you always know what to expect. And sometimes one setting can stretch your phone’s battery way longer.
The range of settings you can control is extensive. SaverTuner gives you options to enable data saver (which reduces data sent and received on metered connections and mobile data), force dark mode to reduce power draw on OLED screens, enable launch boost to accelerate CPU performance during app startup, control vibrations for touch and notifications, toggle window animations, defer both full device backups and app settings backups to the cloud, enable a firewall to defend against potentially malicious web requests, and adjust location access restrictions in low power mode.
You can also reduce maximum screen brightness with a customizable brightness factor slider, force apps into standby, so background apps sleep very quickly, stop background service checks for idle processes, allow or block unnecessary sensor requests like edge sensors, control the Always-On Display in sleep mode, and enable quick doze to enter deep sleep as soon as the screen turns off.
The quick doze feature is also impressive. Android normally waits before transitioning the device into its deepest sleep state. SaverTuner allows you to shorten or eliminate that delay, so the device enters deep sleep as soon as the screen turns off, which can noticeably improve standby time.
There is also a useful “sticky” mode. On most devices, the battery saver turns itself off when you unplug from the charger. With Sticky Mode enabled, SaverTuner automatically reapplies your chosen power profile after unplugging, ensuring your battery-saving setup remains active without requiring manual toggling.
Uninstalling SaverTuner won’t automatically reset your battery saver configuration, so you’ll need to switch back to the default profile before removing the app. This design choice ensures that your settings persist even if something goes wrong, but it also means you should be mindful when uninstalling.
Not flashy, not trendy, just useful
The profile system gives you plenty of flexibility. The Light profile is suitable for everyday use, offering slight efficiency gains without altering the phone’s feel. The Moderate profile strikes a middle ground, improving battery life while maintaining stable performance. When you need more noticeable savings, the high-profile cuts power usage more aggressively, which can come with some performance trade-offs. And if you’re in a situation where you really need to extend battery life—such as traveling or being away from a charger—the Extreme profile applies the most intensive power-saving measures to maximize your battery’s lifespan.