Chat Locker

Protect WhatsUp Private Conversation with Password

Prashant Bhoir · com.pkb.whatsappchatlocker

5.0 out of 5 (1 rating) 1M+ downloads v1.49 3.9 MB Android 4.4+ PEGI 3 · Everyone

Download APK 3.9 MB All versions

Signature matches the Google Play version Details

Watch the Chat Locker trailer on YouTube

At a glance

Latest version: v1.49 (149)
Updated: Jan 16, 2026 (9 months ago)
APK size: 3.9 MB
Requires: Android 4.4+ (API 19)
CPU support: Any (no native code)
Category: Entertainment (app)
Listed since: Apr 19, 2023 (at least)
Permissions: 10 (2 sensitive)
Developer contact: [email protected]
Privacy: Developer's privacy policy

About this APK

Chat Locker is an app by Prashant Bhoir in the Entertainment category, listed since at least April 2023. It has no native code, so it runs on any Android processor.

Since version 1.35, the APK grew from 2.7 MB to 3.9 MB and the minimum Android version rose from 4.0 to 4.4. It asks for 10 permissions, 2 of them sensitive: bind accessibility service and write settings. It asks for the same permissions as version 1.48. The app can read the advertising ID that ad and analytics services use.

What's new in v1.49

Design Changes

Description

From the listing uploaded by “appupdater”.

THE BEST WHATSUP LOCKER APP FOR CHAT CONVERSATION - Whatsup Chat Locker is an application that provide the personal privacy on their chat conversation. this will Protect your conversation from reading by other users This app is ideal for: ✪ Unique Application that provide locker for chats conversation. ✪ Anyone who want to secure their friends conversation. ✪ Anyone who want to secure their group chats conversation. ✪ Quick and simple design to provide the easy interface. ✪ Application with simple popup to understand use of application. After installation it will ask you to set a Password with hint option, and will show the conversation screen to add lock on that chat conversation. You can customize password, also use hint password if you forgot your password. Single click to remove the protection from conversation. You can also activate and deactivate the protection from Application. This app uses Accessibility services to function application, it will only checked app name to show lock screen

Version history

4 versions are listed, going back to v1.35. Since v1.47 it requires Android 4.4+.

v1.49 LATEST Jan 16, 2026 3.9 MB TRUSTED v1.48 Oct 13, 2025 3.9 MB TRUSTED v1.47 Jul 11, 2025 3.9 MB TRUSTED v1.35 Aug 24, 2023 2.7 MB TRUSTED

All 4 versions

Security & authenticity

Security rating: Trusted

Signing certificate

Signature matches the Google Play version Checked by the source store on Jan 16, 2026.
Certificate issued to “PKB Collections” 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 Jan 16, 2026
Validated against Google Play Jan 16, 2026
Signed byCN=Prashant Bhoir, OU=PKB Collections, O=PKB Collections, L=Badlapur, ST=Maharashtra
Signing certificate (SHA-1)EE:AB:A1:AF:37:B1:B4:09:9B:E4:BD:25:8C:9E:5A:F3:18:89:18:58
File MD5eccf20836a994fe7f61b66a4a0aa6665
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 (10)

Chat Locker requests 10 permissions, 2 of them sensitive.

Bind accessibility service Sensitive android.permission.BIND_ACCESSIBILITY_SERVICE
Write settings Sensitive android.permission.WRITE_SETTINGS
Advertising ID com.google.android.gms.permission.AD_ID
Full network access android.permission.INTERNET
Prevent the device from sleeping android.permission.WAKE_LOCK
Receive push notifications com.google.android.c2dm.permission.RECEIVE
Run foreground services android.permission.FOREGROUND_SERVICE
Show notifications android.permission.POST_NOTIFICATIONS
Use fingerprint hardware android.permission.USE_FINGERPRINT
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch

Chat Locker APK: questions and answers

Is there a version of Chat Locker for older Android phones?

The current version needs Android 4.4 or later. Version 1.35 is the newest listed build that installs on Android 4.0 and later. It is an old build: apps that rely on online services may no longer connect when they are this old. Get version 1.35 · 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 Chat Locker 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 eccf20836a994fe7f61b66a4a0aa6665.