# 틈틈봇-자동차정비기능사 (잠금화면에서 자동 학습)+알람

> Every time you turn on your phone, it is a lock screen learning app designed to automatically study previous questions for the auto mechanic certification exam one by one.

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

## Overview

- **ID:** `com.tmtmapp.craftmainmotor`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** 틈틈봇 (잠금화면에서 틈틈이, 자동으로 시험공부)
- **Category:** EDUCATION
- **Downloads:** 6,342
- **Version:** 1.8.7
- **Last updated:** 2026-08-19
- **First published:** 2022-03-27
- **Publisher country:** KR
- **Size:** 190 MB
- **Data as of:** 2026-09-13
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.tmtmapp.craftmainmotor)
- **Website:** [http://www.examscreen.com](http://www.examscreen.com/)
- **Privacy policy:** [https://tmtmapp.com/privacy](https://tmtmapp.com/privacy)

## Description

틈틈봇-자동차정비기능사 (잠금화면에서 자동으로 공부) is an innovative Android app that helps users learn auto mechanic certification questions automatically whenever they turn on their phone. Each lock screen activation presents a previous exam question to study, turning everyday phone use into valuable learning time. With features like wrong answer tracking, intensive unit learning, and motivational tools, this free app provides all the necessary resources for aspiring auto mechanics.

## Rankings

- #661,019 — Overall

## Permissions and access

### Permissions

- `READ_PHONE_NUMBERS`
- `android.permission.ACCESS_ADSERVICES_AD_ID`
- `android.permission.ACCESS_ADSERVICES_ATTRIBUTION`
- `android.permission.ACCESS_ADSERVICES_TOPICS`
- `android.permission.ACCESS_COARSE_LOCATION`
- `android.permission.ACCESS_FINE_LOCATION`
- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.ACCESS_WIFI_STATE`
- `android.permission.CAMERA`
- `android.permission.CHANGE_WIFI_STATE`
- `android.permission.DISABLE_KEYGUARD`
- `android.permission.FOREGROUND_SERVICE`
- `android.permission.FOREGROUND_SERVICE_SPECIAL_USE`
- `android.permission.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.READ_BASIC_PHONE_STATE`
- `android.permission.READ_EXTERNAL_STORAGE`
- `android.permission.READ_PHONE_STATE`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.REQUEST_COMPANION_START_FOREGROUND_SERVICES_FROM_BACKGROUND`
- `android.permission.REQUEST_IGNORE_BATTERY_OPTIMIZATIONS`
- `android.permission.SYSTEM_ALERT_WINDOW`
- `android.permission.USE_FULL_SCREEN_INTENT`
- `android.permission.USE_FULL_SCREEN_INTENT.action.SHOW_ALARMS`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.amazon.privacypass.ATTEST`
- `com.coupang.mobile`
- `com.coupang.mobile.offsite`
- `com.google.android.c2dm.permission.RECEIVE`
- `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE`
- `com.google.android.gms.permission.AD_ID`
- `com.google.android.providers.gsf.permission.READ_GSERVICES`
- `com.huawei.permission.external_app_settings.USE_COMPONENT`
- `com.tmtmapp.craftmainmotor.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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