# 틈틈봇-화공기사 (잠금화면에서 자동으로 시험공부)+알람 > Every time you turn on your phone, it is a lock screen learning app designed to automatically study previous questions for the chemical engineer certification exam one by one. Canonical page: [https://chrome-stats.com/d/com.tmtmapp.engchemical](https://chrome-stats.com/d/com.tmtmapp.engchemical) ## Overview - **ID:** `com.tmtmapp.engchemical` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** 틈틈봇 (잠금화면에서 틈틈이, 자동으로 시험공부) - **Category:** EDUCATION - **Downloads:** 852 - **Version:** 1.8.7 - **Last updated:** 2026-08-19 - **First published:** 2022-03-28 - **Publisher country:** KR - **Size:** 189 MB - **Data as of:** 2026-09-13 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.tmtmapp.engchemical) - **Website:** [http://www.examscreen.com](http://www.examscreen.com/) - **Privacy policy:** [https://tmtmapp.com/privacy](https://tmtmapp.com/privacy) ## Description ■1. Study automatically!

What if you could automatically study one past chemical engineer exam question every time you turned on your phone?
How often do you turn on your phone each day?

You check KakaoTalk, Instagram, the time, and even just glance at your phone unconsciously. But if a question popped up every time you opened your phone, wouldn't you study a lot without even realizing it?

You need to study hard before an important exam. But even if you have a study app installed on your phone, it's a hassle to go back to the app and look at it again. Often, I even forget I'm supposed to be studying the moment I turn on my phone.

Just turn on your phone and you'll automatically see the chemical engineer exam flashcards and past exam questions. If solving the questions is too much of a hassle, just read through them once and don't worry about making mistakes. Even if you just read the clear explanations once and move on, it's incredibly helpful.

■2. A vast collection of past exam questions + the latest questions!

We provide all of the past exam questions from most of the Chemical Engineer exam rounds, including correct and incorrect answer explanations.

And since future exams are updated without fail, this app is all you need to master past exam questions.
This is the most authentic Chemical Engineer study app you've ever seen, so trust us and get it!

■3. Everything's free
Yes! It's currently completely free.

■4. Unit-by-Unit Focused Study Functions
From the first to the last...

Studying the old-fashioned way is very inefficient.

We provide functions that allow you to view the exams by unit and question type,
so you can focus on your weak areas.

■5. Essential study features only experienced students know!
'What did I get wrong? I know this question, so why does it keep coming up?'
'I want to see only the confusing questions...'
Stop worrying about these things.
With the error note and question skipping feature,
create the app that's perfect for you.

If you get a question wrong, it's automatically recorded in your error note.

There's even a feature that lets you skip questions you already know,
so you never see them again.
You can bookmark questions you want to review later,
and view only those parts on your lock screen!

■6. Various features to manage your test taker's energy and stamina.

🎯 Goal reminder feature to keep you on track.
📅 D-day reminder to appreciate the precious time remaining.
📜 Quotes to motivate your efforts.
🌧️ Weather features to help you manage your condition.

💡 Special features of Tteumteubot.

You can automatically view past exam questions on your lock screen, just like an alarm.

Tteumteubot will remind you to solve exam questions whenever you have time in your daily life!

Rely on Tteumteubot to solve past exam questions and pass your certification exam easily.💛

--------------------------------
[Provided Content]
📗 Chemical Thermodynamics
📘 Unit Operations and Chemical Stoichiometry
📙 Process Control
📕 Industrial Chemistry
📒 Reaction Engineering
--------------------------------


We put a lot of effort into creating this app. If you recommend it to many people around you and more people use it, it will give us greater motivation to improve features and add content.
We would be very grateful if you could recommend it to them through KakaoTalk, Instagram, etc.
We would also greatly appreciate a +1 on Google Play.
We would also appreciate a positive review, as it will encourage us to do even better.

* This app is designed for studying on the lock screen.

Copyrightⓒ2022 Ttumttumbot All rights reserved.
* All copyrights in this app belong to Ttumttumbot. Copyright infringement may result in legal action.
* The sole purpose of this app is to study learning content on the lock screen.
The exclusive purpose of this app is that of a lockscreen. ## Rankings - #1,206,681 — 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.engchemical.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` ## Similar extensions and apps - [틈틈봇-전기산업기사 (잠금화면 기출문제 자동학습)+알람](https://chrome-stats.com/d/com.tmtmapp.indengelecindueng) — 20,932 users - [틈틈봇-전기공사기사 (잠금화면에서 자동학습)+알람](https://chrome-stats.com/d/com.tmtmapp.engelecwork) — 3,607 users - [틈틈봇-전기기사 (잠금화면에서 자동 자격증 공부)+알람](https://chrome-stats.com/d/com.tmtmapp.engelec) — 81,580 users - [틈틈봇-정보처리산업기사 (잠금화면에서 자동 공부)+알람](https://chrome-stats.com/d/com.tmtmapp.indenginfopro) — 1,419 users - [틈틈봇-소방설비기사 (전기, 기계) (잠금화면 알람)](https://chrome-stats.com/d/com.tmtmapp.engfireelec) — 61,985 users - [틈틈봇-전기기능사 (잠금화면에서 기출문제 학습)+알람](https://chrome-stats.com/d/com.tmtmapp.craftelec) — 35,418 users - [틈틈봇-일반기계기사 (잠금화면 기출문제 자동학습)+알람](https://chrome-stats.com/d/com.tmtmapp.enggeneral) — 2,687 users - [틈틈봇-토목기사 (잠금화면에서 자동학습)+알람](https://chrome-stats.com/d/com.tmtmapp.engcivil) — 3,731 users - [틈틈봇-산업안전기사 (잠금화면에서 자동학습)+알람](https://chrome-stats.com/d/com.tmtmapp.engindsafety) — 132,495 users - [틈틈봇-대기환경기사 (잠금화면 자격증공부)+알람](https://chrome-stats.com/d/com.tmtmapp.engairpollution) — 3,040 users - [틈틈봇-산업안전산업기사 (잠금화면에서 자동학습)+알람](https://chrome-stats.com/d/com.tmtmapp.indengsafety) — 47,590 users - [틈틈봇-공조냉동기계기사 (잠금화면에서 자동학습)+알람](https://chrome-stats.com/d/com.tmtmapp.engaircon) — 5,992 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.tmtmapp.engchemical)