Private App Lock - Chat app privacy lock
Secure your chats & protect private messages with an easy-to-use, memory-efficient locking mechanism for various platforms.

- 5.2.4 Version
- 3.2 Score
- 529K+ Downloads
- Free License
- 3+ Content Rating
Private Chat Lock - Secure your SMS, WeChat, LINE, KakaoTalk, and other messaging applications to keep your personal information safe.
FEATURE
- Lock your SMS, WeChat, WhatsApp, Facebook, LINE, and KakaoTalk to ensure your data is not exposed.
- The interface features a simple and elegant design.
- It has a minimal memory usage of under 5MB, making it more efficient than similar apps.
- You can unlock using graphics or a password for convenient access.
Does your girlfriend often feel the urge to check your phone?
When you're out with friends, do you want to prevent them from looking at your messages?
Are you concerned that relatives may find your phone and tamper with your messages?
Private Chat Lock will address all these concerns!
=========== Tips ===========
Q1: Why can't I lock the app during setup?
The application lock may fail due to system background cleanup. Some devices require you to grant permissions for background startup. Go to Settings -> Manage apps -> Private AppLock -> Permissions -> Start in background.
Q2: Why does the app not lock after rebooting?
Please ensure the app is included in your self-startup management settings.
Privacy Panic Button: Your Effortless Last Line of Messaging Defense
Private Chat Lock transformed my phone from an anxiety-inducing liability into a truly personal sanctuary, delivering ironclad security with remarkable elegance. As someone who’s endured one too many "playful" phone grabs during gatherings, this app’s impact is visceral: a single patterned swipe instantly shields WhatsApp chats, KakaoTalk history, SMS threads, and every other messaging app behind an unbreachable vault. The genius lies in its stealthy efficiency—with under 5MB memory consumption, it runs silently without draining battery or slowing my device, unlike clunky alternatives.
Setting customizable patterns or PINs felt seamless, and activating locks takes seconds. But the true relief came socially: handing my phone to a cousin to show photos, knowing my LINE conversation with my partner wouldn’t accidentally appear, was liberating. Even system-level vulnerabilities are addressed; the clear permissions guide for background startups eliminated initial hiccups. This isn’t just a lock—it’s psychological armor against snooping, accidents, and lost devices, wrapped in a beautifully minimal interface that disappears until you need it. I’ve regained control without sacrificing convenience.
FAQ Highlighted in Review:
Q: Will locking apps drain battery or slow my phone?
A: Zero performance impact. Engineered for efficiency (<5MB RAM), it runs invisibly without background resource drain.
Q: What if my OS restricts locking after rebooting/background cleanup?
A: Fixable via permissions: Simply navigate to Settings → App Management → Private Chat Lock → Permissions → Enable "Auto-Start" & "Run in Background" for uninterrupted protection.
Q: Is pattern or password unlocking faster?
A: Both offer instant access. Pattern locks provide visual speed, while passwords prioritize precision. Your preference won’t compromise security or convenience.
- Version5.2.4
- UpdateAug 01, 2025
- Developerpogezone
- CategoryTools
- Requires AndroidAndroid 4.4+
- Downloads529K+
- Package Namecom.enjoyvalley.privacy
- Signature508217bd892652d2893d299b80b85236
- Available on
- ReportFlag as inappropriate
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NameSizeDownload
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7.79 MB
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3.71 MB
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3.56 MB
Provides strong app protection
Prevents unauthorized access to sensitive apps
Keeps user information private
Smooth and user-friendly interface
Doesn't display ads frequently
Easy installation process
Can take pictures of intruders
Offers unique features like time password
Locks may not activate reliably
Issues with notification visibility on locked apps
Frequently requires re-entering password for notifications
Suffer from functionality issues over time
Some apps not locking as intended
Delay in locking after screen turn-off
Useless for certain users due to app compatibility
Disguise message feature may be delayed