Security App Lock

Privacy essentials! Lock the app to secure your privacy.

Utilities developer · com.goodtools.AppLock

Not rated yet 100K+ downloads v1.2.6 4.6 MB Android 6.0+ PEGI 3 · Everyone

Download APK 4.6 MB All versions

Signature matches the Google Play version Details

At a glance

Latest version: v1.2.6 (19)
Updated: Nov 4, 2025 (11 months ago)
APK size: 4.6 MB
Requires: Android 6.0+ (API 23)
CPU support: Any (no native code)
Category: Tools (app)
Permissions: 21 (3 sensitive)
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Security App Lock is an app by Utilities developer in the Tools category. It has no native code, so it runs on any Android processor.

Since version 1.2.3, the minimum Android version rose from 4.4 to 6.0. It asks for 21 permissions, 3 of them sensitive: display over other apps, see all installed apps and package usage stats. It asks for the same permissions as version 1.2.5. The app can read the advertising ID that ad and analytics services use.

What's new in v1.2.6

Improved app lock and security features

Description

From the listing uploaded by “appupdater”.

AppLock - The essentials of personal information protection Protect your app. Only you can run the app! The App Lock is a secure app that protects your valuable personal information from your peeking eyes. The App Lock blocks the execution of the app by others. The password lock method securely locks apps with sensitive information and prevents them from being peeked or misused. The security lock app is one of the best app protectors to protect your personal information. If you don't want others to see my smartphone, please use the app lock. App Lock - Blocks access of others to your smartphone app by protecting your application. Select the App to Lock - Select the app you want, such as contact information, messenger, SNS, and gallery app containing your personal information, and lock it. Lock Screen Customizing - You can express your personality by setting the lock screen color freely. Simple lock setting - It is possible to apply the lock function simply and conveniently to all applications. Easy use - Easy and intuitive interface for anyone to use. < Apps that can be safely protected with lock> Messenger - Avoid accessing chat information such as KakaoTalk, Line, Telegram and Watts app. SNS - You can lock Facebook, Instagram, Twitter, TikTok, etc. Gallery - Do not let anyone see sensitive personal information such as photos and videos. Other - Used for all apps on your smartphone, such as YouTube, games, and shopping apps. Security AppLock is a must for your privacy! People who care about privacy. Anyone who uses an app with sensitive information People who want to manage their children's app usage. Anyone who wants to limit the time of using the app Download the AppLock right now to secure your personal information! App Lock - Protect your application

Version history

3 versions are listed, going back to v1.2.3. Since v1.2.6 it requires Android 6.0+.

v1.2.6 LATEST Nov 4, 2025 4.6 MB TRUSTED v1.2.5 Jan 10, 2026 4.6 MB TRUSTED v1.2.3 Apr 5, 2024 4.5 MB TRUSTED

All 3 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Nov 4, 2025.
Certificate issued to “Kim” This is the certificate of the Google Play version.
Same certificate as the 2 other versions checked

Store checks and file details

Developer signature verified Nov 4, 2025
Validated against Google Play Nov 4, 2025
Signed byCN=Kim
Signing certificate (SHA-1)86:99:EF:41:D1:4E:11:EE:B4:9B:D9:06:7A:85:96:15:CE:17:8D:6E
File MD54dcf1406be2ba95a6076568c739dd987
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures (2 other versions compared). AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (21)

Security App Lock requests 21 permissions, 3 of them sensitive.

Display over other apps Sensitive android.permission.SYSTEM_ALERT_WINDOW
Package usage stats Sensitive android.permission.PACKAGE_USAGE_STATS
See all installed apps Sensitive android.permission.QUERY_ALL_PACKAGES
Access adservices ad id android.permission.ACCESS_ADSERVICES_AD_ID
Access adservices attribution android.permission.ACCESS_ADSERVICES_ATTRIBUTION
Access adservices topics android.permission.ACCESS_ADSERVICES_TOPICS
Advertising ID com.google.android.gms.permission.AD_ID
Foreground service special use android.permission.FOREGROUND_SERVICE_SPECIAL_USE
Full network access android.permission.INTERNET
Get tasks android.permission.GET_TASKS
Internal broadcast protection (app-defined) com.goodtools.AppLock.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Kill background processes android.permission.KILL_BACKGROUND_PROCESSES
Prevent the device from sleeping android.permission.WAKE_LOCK
Receive user present android.permission.RECEIVE_USER_PRESENT
Request ignore battery optimizations android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS
Run at startup android.permission.RECEIVE_BOOT_COMPLETED
Run foreground services android.permission.FOREGROUND_SERVICE
Schedule exact alarms android.permission.SCHEDULE_EXACT_ALARM
Set wallpaper android.permission.SET_WALLPAPER
Show notifications android.permission.POST_NOTIFICATIONS
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Portrait screen android.hardware.screen.portrait

Security App Lock APK: questions and answers

Is there a version of Security App Lock for older Android phones?

The current version needs Android 6.0 or later. Version 1.2.5 is the newest listed build that installs on Android 5.0 and later. Get version 1.2.5 · All versions

Can I install this APK over the version I already have?

Yes, if your installed copy is older. It is signed like the Google Play version, so Android installs it as an update and keeps your data.

Is the Security App Lock APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. Its signature matches the Google Play version. It is signed with the same certificate as the 2 other versions checked. After downloading, check that the file's MD5 is 4dcf1406be2ba95a6076568c739dd987.