Smart AppLock: Privacy Protect provides a robust privacy shield for Android, letting users lock apps, photos, and settings with a password or fingerprint. It emphasizes privacy with anti-tamper features and per-app protection. Not ranked in any top list, it shows strong reach with 10,000,000+ total downloads and 1.9K downloads in the last 30 days.
Pros & Cons
Strong user rating from a large base
Comprehensive per-app and content locking (photos, messages, calls, settings)
Fingerprint unlock support for quick access
Discreet lock screen options and break-in alerts to protect privacy
Smart AppLock: Privacy Protect is a tools app developed by Smart Protect Mobile.
Download Statistics
Smart AppLock: Privacy Protect has been downloaded 16 million times. In the last 30 days, the app was downloaded 1.9 thousand times.
User Ratings
Smart AppLock: Privacy Protect is rated 4.52 out of 5 stars. The rating is based on 180 thousand ratings.
App Information
Smart AppLock: Privacy Protect is FREE to download. The APK download size is 24.05 MB. The latest version available is 4.3.13. The last update was on May 27, 2026.
Technical Requirements
Smart AppLock: Privacy Protect requires Android 4.4+ or higher. The app has a content rating of Everyone. The app has been available on Google Play April 2011.
Description
★ The elegant, light and professional App Lock - Smart AppLock ★
-- Unlock with Fingerprint (Samsung or Android 6.0 devices) --
Smart AppLock is a tool to lock apps you like, protect you from privacy leak! It is your great privacy guard and app lock!
With AppLock, you are able to ☆ Lock privacy - lock apps containing privacy content, such as photos, videos(Gallery), short messages(SMS or MMS) and call logs ☆ Lock apps - lock SNS apps, such as Facebook, Whatsapp, Twitter ☆ Lock Incoming Calls ☆ Lock settings - lock system settings, install/uninstall apps to keep phone away from being messed up by others or kids ☆ Lock markets - lock games and markets to prevent your kids from addicting in games or purchasing in markets without your knowing
Special Features of AppLock: • Disguise your lock screen to prevent from breaking into your password • Protect apps with multiple lock types, such as Pattern Lock, PIN lock • With AppLock home screen widget, one click to toggle lock status • Custom lock screen style, custom lock screen background • Light, less memory usage • Advice you to lock related apps smartly, privacy has never been so safe • Beautiful UI and easy to use • No delay auto start after device reboots • Lock recent history, prevent app screenshot being leaked • Hide and encrypt pictures and videos with GalleryVault • Launch locked app within AppLock without password • Break-in Alerts: Take a photo when someone tries to enter your locked app with an invalid password • DelayLock: Once unlock any app, no password is required within a delay time • Unlock with Fingerprint.
----------- FAQ ---------
► I forgot my password, how to retrieve it? When you setup the password/pattern the first time, AppLock will ask you to setup a Password Retrieve method: "Security Question". To retrieve password, tap the "Forgot?" button to show Retrieve Password panel.
Security Question Input the answer to the question you setup before.
► Dose Smart AppLock support iOS platform? Yes, we have an iOS version "iAppLock" for iOS users, you can visit http://iapplock.thinkyeah.com to get the download or search "iapplock" in Cydia to install.(requires Jailbreaked iOS)
---- Any issue or suggest for AppLock, welcome to send mail to us! SmartAppLock@thinkyeah.com We focus on Privacy Protect, provide the professional AppLock to protect your privacy!
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Comments on Smart AppLock: Privacy Protect for Android
★★★★★Anton Yordanov· Jul 17, 2025
Helps me lock all my apps which I don't want someone else to use without my permission. Easy to use. Stays in the background as a process, so it's draining your battery more or less.
★★★★★Wajiha Ali· Feb 3, 2026
This is a nice app to keep your apps safe and secure. It has rlly good options that could even help you see if someone was trying to open the password. What actually happens is that this app takes pics of the intruder which helps us know if someone tried to open the app or not. The only bad thing is that sometimes it forgets to put the password and the apps just opens by themselves.
★★★★★Ibisa Beresiri· Dec 8, 2025
A great app, that helps me protect my phone.
★★★★☆Jason T· Feb 8, 2025
Not bad for a freebie and adds a different protection against people accessing sensitive apps if they have gained access to the phone via biometrics or password.
★★☆☆☆C R· Sep 14, 2025
It's overrun with the most fng irritating ads. You people are so daft to think people will continue using this app with ads like this EVERYWHERE. Also it's bugging out, and I can open several apps that are supposed to be locked... they aren't
★☆☆☆☆Israr Ahmad Khan· Nov 6, 2025
Developers of this app died long ago. App can be uninstalled anytime if a person finds your phone unlocked and wants to see your locked apps. They'll just have to tap, hold, and uninstall the app, and all your locked apps will be open for them. There should be protection from the main settings locked by this app, and it should be able to prevent unauthorized uninstallation.
★★☆☆☆Nobody· Jul 15, 2025
The cleaning tool is annoying and when I try to turn off the notifications, it forces the user to turn them on. I'm looking for an app to do just that job, with no extra-annoying tools, besides, the extra-cleaning tools aren't necessary anymore because most of the Samsung models have a maintenance tool natively installed. UNINSTALLED.
Google Play Rankings for Smart AppLock: Privacy Protect
This app is not ranked
Technologies used by Smart AppLock: Privacy Protect
46 permissions·28 libraries
Subscribe to see full permission and library details
Trust & Safety: The app requests a wide range of permissions (camera, storage, network usage, device state, and more) and integrates analytics and ad networks. While its features emphasize privacy protection and anti-tamper measures (e.g., disguise lock screen, break-in alerts), users should review requested permissions and install from trusted sources to ensure safety.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
