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Android Apps > Tools > App Lock
App Lock icon

App Lock

2.3
Smart Mobile Tools
4.33
413 reviews
10,000+
Downloads
Free

Lock apps with PIN, Pattern, Biometric. Keep privacy safe.

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Screenshots by Smart Mobile Tools, from the Google Play listing
View on Google Play

AppBrain's verdict

Well rated
Rating on Google Play
4.33
413 ratings
Installs
46 thousand
Last updated
October 27, 2026
Ads
Contains ads
Size
10.9 MB

App Lock has 46 thousand installs. Users rate it well: 4.3 stars from 413 ratings.

Official page on Google Play

User feedback

Ratings and reviews on Google Play

Comments on App Lock for Android

★★★★☆ Atencion Berryne · Jan 19, 2026
I think sometimes the app forgets to function minus the adds as well I think it's okay
★★★★★ Rohan Majid · Dec 30, 2025
It is very good app I have recently used
★★☆☆☆ D Gove · Dec 29, 2025
This app wants to many permissions, it doesn't need all those permissions to work, it's an invasive thing, I uninstalled it as soon as I could, I would not trust this app, it's too invasive.

Google Play Rating history and histogram

280
68
0
68
0

Store listing

By Smart Mobile Tools, from Google Play
Description by Smart Mobile Tools Written by the developer, not by AppBrain. Click to read.
🛡️ Protect Your Privacy with AppLock

Tired of worrying about snoopers checking your private messages, photos, and sensitive data? AppLock is the definitive security solution designed to protect your privacy across all your applications and files. Use the robust combination of PIN, Pattern, or Biometric Authentication (Fingerprint) to lock any app, ensuring that only you can access your personal information.
AppLock is more than just a simple app locker; it's a comprehensive privacy suite that includes an Intruder Selfie feature to catch unauthorized access attempts and a secure Photo Vault to hide your most private media.

✨ Key Features That Ensure Maximum Security

1. Powerful App Locking Methods
Triple Security Layer: Lock any application (Gallery, WhatsApp, Facebook, settings, calls, etc.) using your preferred method:
Pattern Lock: Draw a unique shape for quick, secure access.
PIN Lock: Use a numeric code, which is easy to remember yet hard to guess.
Biometric Authentication: Instantly unlock apps using your Fingerprint (if supported by your device), offering the fastest and most secure method.

2. Intruder Selfie: Catch the Snoopers
Automatic Detection: AppLock automatically takes a photo of anyone who tries to unlock your applications with an incorrect password or pattern several times.
Invisible Proof: The photo is captured silently and the evidence is stored securely inside the app, showing you exactly who tried to break into your phone.

3. Secure Photo & Video Vault
Private Gallery: Easily move private photos and videos from your device gallery into our protected vault. These files are encrypted and completely hidden from public viewing and other apps.
Unbreakable Security: Only you can unlock the vault using your master PIN, Pattern, or Fingerprint.

4. Enhanced Privacy Protection
Notification Lock: Prevent others from reading your sensitive notifications (e.g., WhatsApp, Messenger) on the lock screen or notification panel.
Invisible Pattern: Hide the draw path of your pattern to ensure nobody can see your unlock key, even if they are watching over your shoulder.
Time-based Re-lock: Customize when apps should re-lock (e.g., immediately, after a few minutes, or only after the screen is off).

5. Optimized User Experience
Low Memory Usage: AppLock is designed to be lightweight, fast, and consume minimal battery power.
User-Friendly Interface: Set up and manage your locked apps with an intuitive and easy-to-navigate interface.

🚀 Why Choose AppLock?

We understand that your mobile phone holds your entire life. AppLock provides the ultimate, all-in-one solution for anyone serious about digital privacy and data security. Stop worrying about family, friends, or colleagues accessing your private apps. Install AppLock today and take back control of your phone's security!

Install AppLock today and secure your digital life!

Recent changes:
• Performance enhancements and bug fixes

Safety and technology

Found in the app by AppBrain
Ads
Contains ads
Price
Free
Libraries
20
App size
10.9 MB
Content rating
Everyone

Technologies used by App Lock

25 permissions · 20 libraries
Subscribe to see full permission and library details

Releases

Updates seen on Google Play
Version
2.3
Launched
December 2025
  • Oct 27, 2026UpdateVersion 2.3
  • Oct 4, 2026UpdateVersion 2.2
  • Sep 2, 2026UpdateVersion 2.1
  • Jul 21, 2026UpdateVersion 2.0
  • Jun 21, 2026UpdateVersion 1.9.5
Show all changes Show fewer

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Installs

Tracked by AppBrain
Last 30 days
1.4 thousand
Per day
48
30-day average
Play install range
10+ thousand
Launched
December 2025

Installs over time

App Lock has been installed 46 thousand times. Over the past 30 days, it averaged 48 installs per day.

Rankings

Google Play top charts

Google Play Rankings for App Lock

This app is not ranked

About the app and developer

About App Lock

App Lock is a tools app developed by Smart Mobile Tools.

Install Statistics

App Lock has been installed 46 thousand times. In the last 30 days, the app was installed 1.4 thousand times.

User Ratings

App Lock is rated 4.33 out of 5 stars. The rating is based on 410 ratings.

App Information

App Lock is freely available from Google Play. The app size is 10.87 MB. The latest version available is 2.3. The last update was on October 27, 2026.

Technical Requirements

The app has a content rating of Everyone. The app has been available on Google Play since December 2025.

App Lock is made and published by Smart Mobile Tools. AppBrain is an independent app data site and isn't affiliated with Smart Mobile Tools. The app name, icon, screenshots and description belong to Smart Mobile Tools and are shown as published on Google Play.

App Performance Report

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Get PDF Report — $29

Developer information for Smart Mobile Tools

Smart Mobile Tools

ngocquyennguyen.bk.22@gmail.com

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Overview Alternatives History Reviews Rankings Technology
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