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Android Apps > Tools > AppDefender (App Lock)
App profile & analytics · Tools · Data updated 2026-10-18
AppDefender (App Lock) icon

AppDefender (App Lock)

by telemarks.co.jp · Free · Version 6.6.9

“App Lock keep your privacy. Captures intruder /Fingerprint auth support.” the developer's tagline

Availability On Google Play since October 2010 ↗
Rating on Google Play
4.13/5
7,172 ratings
At a glance AppBrain's trailer of this app, made from our data
Rating
4.13
7,172 reviews
Total installs
1.1
million
Installs, last 30 days
0
Best rank
–
not in the top lists
Last updated
August 15, 2021
6.6.9
AppBrain's verdict EstablishedPopularWell rated

AppDefender (App Lock) is popular, with 1.1 million installs. Users rate it well: 4.1 stars from 7,172 ratings.

AppDefender (App Lock) is made and published by telemarks.co.jp. AppBrain is an independent app data site and isn't affiliated with telemarks.co.jp. The app name, icon, screenshots and description belong to telemarks.co.jp and are shown as published on Google Play.

About AppDefender (App Lock)

AppDefender (App Lock) is a tools app developed by telemarks.co.jp.

How many times has AppDefender (App Lock) been installed?

AppDefender (App Lock) has been installed 1.1 million times. In the last 30 days, the app was installed 0 times.

What is the rating of AppDefender (App Lock)?

AppDefender (App Lock) is rated 4.13 out of 5 stars, based on 7.2 thousand ratings.

Is AppDefender (App Lock) free?

AppDefender (App Lock) is free. The app size is 3.38 MB. The latest version available is 6.6.9. The last update was on August 15, 2021.

What are the requirements for AppDefender (App Lock)?

AppDefender (App Lock) requires Android 4.1+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since October 2010.

Description by telemarks.co.jp (from Google Play)
AppDefender is an app to block your private information such as your browsing history or text messages from being peeked when you happened to hand your phone to friends.
It locks the apps which you don’t want to be seen by others and protect your privacy.
An app to prevent peeping by your friends or family.
Also if someone enters wrong password 5 times, the inside camera will take a picture of the person without his/her noticing and keep the record.
You will be free from the worry that your boyfriend/girlfriend may have seen your phone secretly.

[App Lock Function]
Lock specified apps by a password.
You will be free from the worry below by specifying apps such as SNS or Text messages which you don’t want to be seen by your family, friends or boyfriend/girlfriend.
- You have a feeling that your phone may be peeked while you are taking bath.
- You worry that your text messages or browsing history may be peeked when you hand your smartphone to friends.
- The phone in your bag activates unexpectedly during travel.
- Your kids change the setting without your permission.

[Function of taking a picture of peeking]
If someone press wrong password 5 times, the inside camera takes a picture of the person secretly.
You can find out who tries to peek your private information.
-This app is available from Android 4.0 or above and you need the device model with front camera.
-You need this app to be ON in the settings window.

[Other functions]
Equipped with reminder function when you forget the password and password clear from Google account identification.
You can still unlock the apps even if you forget the password.
. The key order can be random to prevent being guessed the password from the movement of fingers.
. Effective time of unlock can be set to prevent repeatedly appearing lock screen.

[Steps to use ]
1. User support setting (from OS 5.0 and above)
The setting is necessary for this App to work. Please follow the instructions on the screen.

2. Setting password
The password setting will appears when you first time activate this App.

3. Select the Google account in case you forget the password.
Login the Google account to unlock the Apps.

4. Select apps to be locked.
Select the apps to be locked by password from the main screen.

5. Closing AppDefender
Press the back button to close the Apps lock.
The password entering window will appear when the specified app is activated.

[ FAQ]
-How to uninstall
When you are using advanced protection, please take the following steps to uninstall.
1.Start the app and open the settings window.
2.Tap the disable advanced protection.
3.After taking the above steps, then you can uninstall this app with the same way of as uninstalling other apps.

-The lock window of GalaxyS8/S8+ is shorter than the device screen.
If you use the Samsung GalaxyS8/S8+, you need to set your device to display full screen.
Go to Settings→Display→FullScreen apps to set AppDefender ON and allow using full screen.
You can display FAQ from the settings of AppDefender.
If this app is not working properly, please refer FAQ.

[Uses Permissions]

-User Accessibility: To detect foreground app.(Android5.0+)
-Get account: To forgot password recovery
-Draw over other apps: To lock app
-Fingerprint auth: To unlock app
-Internet Access:Used for ads
-Camera: To capture photos
-Run at startup: To start service when device boots up
-Get task: To detect foreground app

**This app uses the device administrator. (Only when using advanced protection)
Advanced protection :Activate Device Administrator to prevent others from uninstalling app.
It is used only for this purpose, we do not use any policies of Device Administrator.

**This app uses Accessibility services.
Android 5.0 later users must grant accessibility for Appdefender to enable App Lock.
Show more Show less

App Performance Report

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Screenshots

AppDefender (App Lock) Screenshot 1 of 3
AppDefender (App Lock) Screenshot 2 of 3
AppDefender (App Lock) Screenshot 3 of 3
Screenshots by telemarks.co.jp, from the Google Play listing
Official page on Google Play

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Google Play Rating history and histogram

4.6K
920
550
180
920

Installs over time

AppDefender (App Lock) has been installed 1.1 million times. Over the past 30 days, it has been installed 0 times.

Changelog of AppDefender (App Lock)

Show changelog

Developer information for telemarks.co.jp

telemarks.co.jp

android@telemarks.co.jp

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Comments on AppDefender (App Lock) for Android

★★★★★ Very fast rather than other app locks working perfectly
★★★★★ App Defender Is Very Useful For App Locking. App Defender Works Very Well. I Would Always Like To Use App Defender.
★★★★★ No uninstall lock app இருக்கா please app creat please tell me please please please please
★★★★★ Awesome app even if i on and off my phone the lock still maintains, unlike other apps
★★☆☆☆ This app does not work properly. Password requires after few time of opening the app. Plz solve the problem..... Again same issue happens. App goes to inactive mode. And each Try app defender has to reset 😒🙄
★★☆☆☆ What is the point of an app defender when u can't defend ur own app. Such a shame. I installed this app to secure other apps but just by uninstalling this app u can easily use other apps. Make changes use password protection before uninstalling ur own app or else no use.

Google Play Rankings for AppDefender (App Lock)

This app is not ranked

Technologies used by AppDefender (App Lock)

10 permissions · 13 libraries
Subscribe to see full permission and library details
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AppLock Master - Protect App icon AppLock Master - Protect App
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Overview Alternatives History Reviews Rankings Technology
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