# QuizLock: Screen Time & Quiz

> Screen time that teaches you something. Apps lock until you answer.

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

## Overview

- **ID:** `com.blackcatstudio.quizlock`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** BTR Interactive
- **Category:** PRODUCTIVITY
- **Downloads:** 2,665
- **Version:** 1.0.6
- **Last updated:** 2026-08-31
- **First published:** 2026-08-13
- **Publisher country:** DE
- **Size:** 30 MB
- **Data as of:** 2026-09-10
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.blackcatstudio.quizlock)
- **Website:** [https://bturksoy.github.io/](https://bturksoy.github.io/)
- **Privacy policy:** [https://bturksoy.github.io/quizlock-privacy/](https://bturksoy.github.io/quizlock-privacy/)

## Description

QuizLock turns the time you lose to scrolling into something you keep.<br><br>Choose the apps you lose time in and set a daily limit. When you reach it, QuizLock locks the app and asks a question. Answer it and you are back in. That is the whole idea — the phone does not just say no, it asks for something small in return.<br><br>WHAT YOU GET<br>• Screen-time limits for the apps you choose<br>• A lock screen with a real question, not a guilt trip<br>• 84,000+ questions across nine categories, in seven languages<br>• Vocabulary practice in seven languages<br>• Questions you get wrong come back on a spaced-repetition schedule<br>• Practice any time to bank minutes you can spend on a future lock<br>• Day streaks, with a protection that covers the day you forget<br>• Per-category accuracy, so you can see what you are actually weak at<br>• A morning summary and an evening reminder — both optional<br><br>YOUR DATA STAYS ON YOUR PHONE<br>Screen-time measurements, the list of apps you monitor and your quiz history are stored on the device. We have no servers and no accounts. You can export a backup file whenever you like.<br><br>IN A HURRY?<br>Watch a short ad to skip once, or spend minutes you earned by practising. Premium removes ads and adds automatic backup.<br><br>QuizLock is a digital wellbeing tool. Usage Access is used only to measure the apps you choose; the display-over-apps permission is used only to show the quiz.

## Rankings

- #1,102,183 — 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.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_SPECIAL_USE`
- `android.permission.INTERNET`
- `android.permission.PACKAGE_USAGE_STATS`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS`
- `android.permission.SYSTEM_ALERT_WINDOW`
- `android.permission.USE_BIOMETRIC`
- `android.permission.USE_FINGERPRINT`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.blackcatstudio.quizlock.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`

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