AppLock Pro - App Lock & Guard

Contains adsIn-app purchases
4.4
2M reviews
Content rating
Everyone
100M+
Downloads
Content rating
Everyone
Learn more
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About this app

Protect your apps and photos with AppLock Pro — a fast, secure, and easy-to-use app locker trusted by millions.

Whether you're guarding private messages, social media apps, or sensitive photos, Applock Pro keeps your data safe from intruders — with smart features like fingerprint unlock, spy camera, and customizable lock styles.

🔐 Top Features:

✔ Lock Any App
Secure WhatsApp, Instagram, Messenger, Gallery, Settings, and more using PIN, pattern, fingerprint (if supported), or KnockCode.

📸 Spy Camera Protection
Catch snoopers in the act! A secret photo is taken when someone enters the wrong password.

🧠 Fake Error Message
Trick intruders with a fake error screen instead of showing the app is locked.

🔕 Hide Notifications
Block or hide sensitive notifications from locked apps.

⏱ Lock Timer & Auto Re-Lock
Set AppLock to auto-disable during certain hours, or re-lock after a short break.

🚨 Spy Alarm
Trigger a loud alarm if the wrong password is entered multiple times.

🎨 Custom Themes
Change the look and feel. Set a custom background using your own gallery photos.

⚙️ Smart Settings
Lightweight and optimized for battery & RAM. Includes vibration, new app alerts, lock recent apps, and more.

🛡️ Lock Types:
Fingerprint (if supported by your device)
KnockCode – a unique and secure unlock method
Pattern – simple and fast
PIN – 4 to 8-digit password

📌 Frequently Asked Questions
Q: How do I prevent AppLock Pro from being uninstalled?
Lock system settings and enable “Hide Icon” for extra protection.

Q: Why are permissions needed?
We only request permissions necessary for advanced features like custom backgrounds.

Q: What if I forget my password?
Use your secret answer to reset it easily.

Q: Can I hide photos and videos?
Lock the Gallery app to block access to your media.

Q: How does the spy camera work?
After 5 failed password attempts, AppLock Pro snaps a front-camera photo and stores it securely.

Ready to protect your privacy?
Download AppLock Pro now and take control of your app security.
Updated on
Jul 16, 2026

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.
This app may share these data types with third parties
Location, App activity and 2 others
This app may collect these data types
Location, App activity and 2 others
Data is encrypted in transit
Data can’t be deleted

Ratings and reviews

4.5
1.92M reviews
Chuck
July 19, 2026
Seems like an ok app lock, nothing special. I really dont need/want a half baked "private" browser wrapped into an applock. Privacy policy is pretty exorbitant, so wouldn't trust "private" browsing anyway. Uninstalled because ads are WAY too frequent & intrusive. Ad free version is way too expensive! I'm not paying $3/month or $30/year. I would pay a one-time $10-20 fee to stop the ads, but their pricing is just way over the top! Norton's free standalone is still around & works just as good.
1 person found this review helpful
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App Lock LLC
July 19, 2026
We hear you — ads delaying access (especially in urgent moments) is not the experience we want. Your feedback has been shared with our team, and we're actively reviewing ad placement and frequency.
My Name
July 15, 2026
Reviews are Probably Bought This app lock other apps on the phone but has many issues. First of all, it glitches. For instance, I can see a preview of my messages right before the lock screen appear for me to put the password to actually access the app. Secondly, the app is FULL OF AD. ANNOYINGLY FULL OF ADS. You won't be able to open an app right away without first seeing an annoying and random ad for 10-20 seconds. Good luck if you're in a hurry. I am deleting the app right now.
2 people found this review helpful
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App Lock LLC
July 16, 2026
Thanks for letting us know — crashes or freezing aren't the experience we want. Please open a support ticket at https://applock.zendesk.com/hc/en-us/requests/new with your device model and Android version so our engineers can investigate.
Vash Miller
July 3, 2026
Good at first, but lately they have started giving me ads sometimes when opening locked apps. These are easy to skip because you can just close the ad by closing applock but they're still giving me ads so I have to leave one star. I will keep using it because I'm used to it, and I will keep skipping out of the ads, and I will keep one star until they remove ads. Edit: The devs responded to the original review using AI btw... I've also noticed ads getting more frequent over time, might uninstall
9 people found this review helpful
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App Lock LLC
July 6, 2026
We hear you — ads delaying access (especially in urgent moments) is not the experience we want. Your feedback has been shared with our team, and we're actively reviewing ad placement and frequency.