# 4kus

> Lock distracting apps complete a task.Focus, discipline, and healthy habits

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

## Overview

- **ID:** `com.brainfocus.brainfocus`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** Soyamba
- **Category:** PRODUCTIVITY
- **Downloads:** 1
- **Version:** 1.0.0
- **Last updated:** 2026-07-15
- **First published:** 2026-07-15
- **Publisher country:** ZA
- **Size:** 48 MB
- **Data as of:** 2026-09-16
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.brainfocus.brainfocus)
- **Privacy policy:** [https://sites.google.com/view/4kusfirst/home](https://sites.google.com/view/4kusfirst/home)

## Description

4kus is a smart productivity app that helps you reduce mindless scrolling and regain control of your screen time. Instead of instantly opening distracting apps, 4kus challenges you to earn access through a quick quiz or a simple exercise.<br><br>Whether you&#39;re trying to study, work, exercise, or simply spend less time on social media, 4kus helps you make intentional decisions before every distraction.<br><br>How 4kus uses the AccessibilityService API<br><br>4kus uses Android&#39;s AccessibilityService API to power its core app-blocking feature: the service detects when you open an app you have chosen to block, so 4kus can immediately show the unlock challenge before you start scrolling.<br><br>Your privacy is protected:<br>• The service only observes which app is in the foreground — it cannot and does not read your screen content, messages, passwords, or payment information (window content retrieval is disabled).<br>• No data from the service is collected, stored remotely, or shared with anyone.<br>• The service is optional and only activated if you enable it yourself in Android Settings, after 4kus explains why it&#39;s needed.<br>• You can disable the service or uninstall 4kus at any time.

## Rankings

- #3,142,601 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.CAMERA`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_SPECIAL_USE`
- `android.permission.INTERNET`
- `android.permission.PACKAGE_USAGE_STATS`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.RECORD_AUDIO`
- `android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.brainfocus.brainfocus.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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