# 틈틈봇-수질환경기사 시험대비(잠금화면 자동 공부)+알람

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

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

## Overview

- **ID:** `com.tmtmapp.engswater`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** 틈틈봇 (잠금화면에서 틈틈이, 자동으로 시험공부)
- **Category:** EDUCATION
- **Downloads:** 2,453
- **Version:** 1.8.7
- **Last updated:** 2026-08-19
- **First published:** 2022-03-29
- **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.engswater)
- **Website:** [http://www.examscreen.com](http://www.examscreen.com/)
- **Privacy policy:** [https://tmtmapp.com/privacy](https://tmtmapp.com/privacy)

## Description

틈틈봇-수질환경기사 (잠금화면에서 자동으로 자격증공부) is an innovative learning app that allows users to study water technician certification questions automatically every time they unlock their phone. The app features a vast database of previous exam questions with explanations for both correct and incorrect answers, allowing for effective and efficient study. Users can customize their learning experience by focusing on weak areas and tracking progress with various tools designed to enhance motivation.

## Rankings

- #894,784 — 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.engswater.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

## Similar extensions and apps

- [틈틈봇-대기환경기사 (잠금화면 자격증공부)+알람](https://chrome-stats.com/d/com.tmtmapp.engairpollution) — 3,040 users
- [틈틈봇-화공기사 (잠금화면에서 자동으로 시험공부)+알람](https://chrome-stats.com/d/com.tmtmapp.engchemical) — 852 users
- [틈틈봇-정보처리산업기사 (잠금화면에서 자동 공부)+알람](https://chrome-stats.com/d/com.tmtmapp.indenginfopro) — 1,419 users
- [틈틈봇-전기산업기사 (잠금화면 기출문제 자동학습)+알람](https://chrome-stats.com/d/com.tmtmapp.indengelecindueng) — 20,932 users
- [틈틈봇-소방설비기사 (전기, 기계) (잠금화면 알람)](https://chrome-stats.com/d/com.tmtmapp.engfireelec) — 61,985 users
- [틈틈봇-산업안전기사 (잠금화면에서 자동학습)+알람](https://chrome-stats.com/d/com.tmtmapp.engindsafety) — 132,495 users
- [틈틈봇-정보처리기사 (잠금화면 기출문제 자동학습)+알람](https://chrome-stats.com/d/com.tmtmapp.enginfopro) — 9,409 users
- [틈틈봇-산업안전산업기사 (잠금화면에서 자동학습)+알람](https://chrome-stats.com/d/com.tmtmapp.indengsafety) — 47,590 users
- [틈틈봇-화재감식평가산업기사 (잠금화면 자동학습)+알람](https://chrome-stats.com/d/com.tmtmapp.fireevaluationindeng) — 197 users
- [틈틈봇-위험물기능장 (잠금화면 기출문제 자동학습)+알람](https://chrome-stats.com/d/com.tmtmapp.crafthazardousmaterial) — 2,563 users
- [틈틈봇-전기기능사 (잠금화면에서 기출문제 학습)+알람](https://chrome-stats.com/d/com.tmtmapp.craftelec) — 35,418 users
- [틈틈봇-조경기능사 (잠금화면에서 자격증공부)+알람](https://chrome-stats.com/d/com.tmtmapp.craftlandscape) — 10,536 users

---

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