App Locker - Protect apps

Contains adsIn-app purchases
4.1
355 reviews
50K+
Downloads
Content rating
Everyone
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About this app

App Locker allows you to prevent unwanted access to your apps with PIN, pattern or password lock.

How to use? Please watch demo
• TikTok
https://vt.tiktok.com/ZSk1u3EHV
• YouTube
https://youtube.com/shorts/drr2bwqb8b8

Please read descriptions below carefully before using this app.

Features:
★ Safe and easy to use
★ No dangerous permissions
★ Support Android 5.0 and up
★ Advanced security settings:
- Prevent uninstalling App Locker by activating its device admin
- Prevent deactivating App Locker by locking Settings app which can be used to clear app data

Please note that:
This app does not request the dangerous permissions such as Location, Contacts, SMS, Storage,... And it only uses the accessibility service to be able to detect when an app is being accessed. So, you can trust that it does not connect to a remote server to steal your privacy data. Please feel safe to use!

If you have any questions, suggestions or bugs, please contact me at thesimpleapps.dev@gmail.com

FAQ:
• How if I forget the lock screen?
Because this app doesn't want to use Internet access (for your privacy), so it doesn't support password recovery via internet such as email.
If you forget password, you can clear app data or re-install app.
But if you activated the device admin and also locked Settings app, you will no longer be able to clear app data or uninstall app.
So please try to not forget the password!

• Why can't I activate App Locker again after force stop?
If you can't activate App Locker after already turned on the accessibility service for App Locker, then please try to turn off the accessibility service and turn it on again.
Updated on
Jun 11, 2025

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
No data collected
Learn more about how developers declare collection
Data is encrypted in transit

Ratings and reviews

4.2
336 reviews
A Google user
January 23, 2020
This is a great app. I only gave four stars because of an issue I have been experiencing. Sometimes one app will open another app on your phone. For example if I go to my call app and touch text messaging it will open the text messaging app to text a person that I was going to call. The applocker will unlock the first app but when it's time for the second app to open up it will not work. It becomes necessary to close everything and reopen the second app after.
26 people found this review helpful
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jivitesh kashyap
June 16, 2025
1 - click the locked app (do not unlock) 2 - tap minimize button aur then click the locked app again(do it 2 to 3 times ) 3 - now you can scroll through the whole contacts you had chat with. then click the conversation you want to read 4 - the app will lock again then you need to follow 2nd step again ----- now you can read the whole conversation ( do not click anywhere axcept scrolling -----
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Paul
July 4, 2022
This is the best App locker I've tried by far. Simple and easy to use on Samsung A53 running OS 12 with One UI ⭐ Important to remember that you must turn off in app notifications so App locker can't be disabled in notification shade ⭐ Will review again and consider donating after I've been using the app for a while.
29 people found this review helpful
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The Simple Apps
September 9, 2022
Hello, Thank you for using my app! Please share it with your friends if possible. Thanks!

What’s new

New features:
• Lock Recent apps screen
• Lock Install/Uninstall apps
• Lock Allow USB debugging

Thank you for using App Locker.