Screen Lock offers Admin lock and Smart lock modes, plus shortcuts, a home-screen widget, and sensor-based wake/lock options. With 5,000,000+ total downloads and 10K in the last 30 days, it remains a popular TOOLS utility, rated 4.14 from 73,448 users.
Pros & Cons
Supports Admin lock and Smart lock modes for flexible security
One-tap access via shortcuts, notification actions, and a screen widget
Highly customizable lock experience with icons, sounds, and vibration
Sensor-based wake/lock features and distraction-free usability options
Not ranked in any top lists
Requires device administrator and several sensitive permissions
Uninstall requires disabling the device administrator first
About Screen Lock
Screen Lock is a tools app developed by Mahesh Kumar Nayak.
How many times has Screen Lock been downloaded?
Screen Lock has been downloaded 7 million times. In the last 30 days, the app was downloaded 10 thousand times.
What is the rating of Screen Lock?
Screen Lock is rated 4.17 out of 5 stars, based on 73 thousand ratings.
Is Screen Lock free?
Screen Lock is free to download. The APK download size is 8.70 MB. The latest version available is v5.1.8f_ap. The last update was on October 22, 2024.
What are the requirements for Screen Lock?
Screen Lock requires Android 9.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play June 2013.
Description
Screen Lock, is created to extend the life of the hardware power button by using the feature within the app. Support for both Admin lock and Smart lock system. Easy to Screen off and lock the device depending on your selected preferences.
This app uses the Device Administrator permission. Necessary for the app to lock with Admin lock. Read write system settings permission to enable the Smart lock feature if needed.
This app uses Accessibility service. It is optional for only Android 9 and above. Used only for taking advantage of the internal Screen Lock option to overcome the delay in the Smart lock feature.
One tap to off and lock the device using: ☞ Admin lock (Shortcut) ☞ Smart lock (Shortcut) ☞ Screen lock widget ☞ Admin lock and Smart lock from notification ☞ Floating widget
Screen lock using available device sensors for both lock and wakeup feature: ☞ Flip cover ☞ Air swipe ☞ Desk option ☞ Awesome shake
Usability enhancements: ☞ ‘Movement listener’ option for a distraction-free reading experience. ☞ ‘On home screen’ for easygoing. ☞ ‘Pause on landscape’ to play games effortlessly. ☞ ‘Pause on call’ to let the device follow its default course of action.
Personalisation features: Animations to pick for Phone lock experience. Vibration feedback upon Phone locked. Lock and unlock sound at varied points to play the tone you love to hear. Sound volume is picked from notification sound as volume and can be further adjusted with ease, also respecting DND mode.
Highly customisable lock icon with an easy-to-use interface. Option to use Metallic and Material icon as a choice for both Admin lock and Smart lock.
Animation speed is adjusted with the “Transition animation scale," and “Animator duration scale”. Our advice, use 1x for the best ‘Screen Off’ experience. The changes may take place after lock and unlock.
Note 1: Device administration must be disabled before uninstalling.
Note 2: Disable default device lock and unlock sound, if applying from this app.
Any suggestions for improving the Screen Lock app are most welcome. We’ll do our best to present you desired usage experience.
Recent changes: v5.1.8f_ap ☞ Library update
If you have any issues, please report them via email.
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I installed it on an old phone with Android 8 and fingerprint sensor, integrated in power button. Need to prevent failure of the fingerprint sensor due to power button overuse. This app works fine (without delay!) with on-screen lock button: quick and easy screen lock. Next I can do quick screen unlock with the fingerprint sensor. Just what I was looking for! Note: after long time of screen lock I wake up the phone with the camera button, next unlock with the fingerprint sensor.
★☆☆☆☆Serge Ignashin· Jul 22, 2026
Horrible app - all data lost!!! I've installed it on my phone. I noticed that after locking the screen with this app - the phone requires a pin instead of a fingerprint - incredibly inconvenient! And after reboot my phone this app caused the phone to crash when entering the password. Even save mode didn't help! This ultimately resulted in the loss of ALL data! I really regret that I didn't immediately realize that you should never install an app from any Kumar!
★☆☆☆☆Annie Body· May 9, 2026
Grossly overcomplicated way to 'lock' screen, which it does not do. Other apps achieve the same thing simply and effectively. Icon has one icon overlaid over another. Icon changes do nothing to the default icon.
★★☆☆☆Matt· Jul 15, 2026
Though this free version still works for my newest phone (Galaxy s25+, android 16), while the pro version (which I purchased and used successfully up till this phone) now just crashes whenever I try to use it, I'm still becoming concerned about security with this free version, since it hasn't been updated since 2024! Please update or document assurance that you've thoroughly vetted this version for Android 16 and that it's still secure! I might have to uninstall otherwise. Thanks.
Google Play Rankings for Screen Lock
This app is not ranked
Technologies used by Screen Lock
22 permissions·16 libraries
Subscribe to see full permission and library details
Trust & Safety: The app requests a broad set of permissions, including network, storage, foreground service, and device administrator. Device Administrator is required for Admin lock, and an optional Accessibility service is used on Android 9+ for the Smart lock feature. Users should review privacy implications of the permission set, and note that uninstall requires disabling device administrator.
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