# Knock lock screen - Applock

> Enjoy unique way to unlock your screen and also secure apps with it.

Canonical page: [https://chrome-stats.com/d/com.knocklock.applock](https://chrome-stats.com/d/com.knocklock.applock)

## Overview

- **ID:** `com.knocklock.applock`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** GoldenKing Apps
- **Category:** TOOLS
- **Downloads:** 2,528,111
- **Rating:** 4.16 / 5 (13,867 ratings)
- **Version:** 1.7.4
- **Last updated:** 2026-03-15
- **First published:** 2018-01-27
- **Publisher country:** IN
- **Size:** 13 MB
- **Data as of:** 2026-09-12
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.knocklock.applock)
- **Website:** [https://goldenkingapps.web.app/](https://goldenkingapps.web.app/)
- **Privacy policy:** [https://goldenkingapps.web.app/privacy/knock-lock/](https://goldenkingapps.web.app/privacy/knock-lock/)

## Description

Knock Lock Screen - Applock offers a unique and secure way to unlock your device while protecting your privacy. Instead of exposing your PIN or swipe patterns, simply tap a secret knock sequence on your screen to unlock — completely invisible to onlookers. This innovative approach confounds intruders and keeps your device safe from unauthorized access.

Features include multiple lock types such as Knock Lock, Pattern Lock, and Time Password Lock. It prevents accidental calls and unauthorized use with customizable knock positions and supports both 12-hour and 24-hour formats. Knock Lock also includes options to enable or disable unlock vibrations and sounds, consumes minimal memory and battery power, and boasts rich graphics for a clean user experience. To support double-tap locking, the app requests device administrator permission without intruding on your private data. This extension is perfect for users seeking advanced device security with an easy, discreet unlocking method.

## Rankings

- #38,823 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.CAMERA`
- `android.permission.DISABLE_KEYGUARD`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_SPECIAL_USE`
- `android.permission.INTERNET`
- `android.permission.PACKAGE_USAGE_STATS`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.QUERY_ALL_PACKAGES`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.READ_PHONE_STATE`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS`
- `android.permission.SYSTEM_ALERT_WINDOW`
- `android.permission.USE_FINGERPRINT`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `android.permission.WRITE_EXTERNAL_STORAGE`
- `com.google.android.c2dm.permission.RECEIVE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`
- `com.knocklock.applock.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Review summary

Most reviews are positive, praising Knock lock screen - Applock for ease of use and solid app-lock functionality. Users frequently mention good performance and a smooth experience, with the knock lock feature being a standout option. A few reports note reliability issues with the knock code, plus occasional lock behavior when the device is turned off and some devices showing better compatibility than others. Overall, it is seen as a reliable, convenient locking solution with room for improvement on edge cases.

### Pros

- Knock lock feature is a popular attraction among users
- Easy to use and user-friendly interface
- Reliable app lock and strong privacy protection
- Smooth performance and responsive operation
- Overall positive user sentiment and satisfaction

### Cons

- Knock code can be unreliable for some users
- Lock may stop working or turn off when the phone is switched off
- Device compatibility varies across phones (better on some devices)

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- [Door Lock Screen](https://chrome-stats.com/d/com.appsfreelocker.teddy.bear.pin.lockscreen) — 2,280,673 users, 3.95 / 5
- [App Lock](https://chrome-stats.com/d/com.ciy.applock) — 1,029 users

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.knocklock.applock)