# 산안기 - 산업안전기사 필기 문제집 개념 해설 문제풀이 > Industrial Safety Engineer Written Exam: 6 Subjects, Over 3,900 Questions · 113 Concept Lessons · 10 Sets of CBT Mock Tests · Error Notes · Weakness Analysis · FSRS Review Canonical page: [https://chrome-stats.com/d/dev.daylab.safekisa](https://chrome-stats.com/d/dev.daylab.safekisa) ## Overview - **ID:** `dev.daylab.safekisa` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** DayLab - **Category:** EDUCATION - **Downloads:** 214 - **Version:** 1.4.0 - **Last updated:** 2026-09-07 - **First published:** 2026-05-04 - **Publisher country:** KR - **Size:** 120 MB - **Data as of:** 2026-09-11 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=dev.daylab.safekisa) - **Website:** [https://dayprep.co/safekisa](https://dayprep.co/safekisa) - **Privacy policy:** [https://safekisa.daylab.dev/privacy](https://safekisa.daylab.dev/privacy) ## Description For the Industrial Safety Engineer written exam, passing depends more on how you review than on how many questions you solve.

The Industrial Safety Engineer app is not just an app that increases the number of practice questions. It focuses on helping you understand concepts first, pinpointing your current weaknesses, and bringing back questions you have already solved just before you forget them. Because the cognitive science-based FSRS algorithm analyzes the forgetting curve for each question to automatically determine the optimal review time, the amount of information retained differs even with the same amount of time invested. Even if you have limited study time due to field work, 30 minutes before work and 1 hour after work is sufficient.

[Key Features]

Over 3,900 questions covering the entire range of 6 subjects

Covering Industrial Accident Prevention and Safety & Health Education, Ergonomics and Risk Assessment Management, Machinery, Equipment & Facility Safety Management, Electrical Facility Safety Management, Chemical Facility Safety Management, and Construction Safety Management. It was developed in-house to reflect the 2024-2026 NCS examination standards. In the app, subjects are abbreviated as Industrial Accident Prevention, Ergonomics, Machine Safety, Electrical Safety, Chemical Safety, and Construction Safety.

Learning Tab Starting with Concepts

Learn 6 subjects step-by-step, starting with the basics, through 113 lessons. Each lesson follows a sequence where you guess first, read the explanation, and check your understanding with practice questions, ensuring that you do not just skim through the material. Commonly confusing points are highlighted as "exam traps," and difficult concepts are explained using everyday analogies. Related problems are linked to each lesson, allowing you to immediately apply what you have learned.

Learning Report

View your status, estimated scores, growth signals, and other indicators for each subject on a single screen. As you accumulate practice problems, your estimated scores become clearer, and the report guides you on what to review first based on the time remaining until the exam.

10 Sets of Practice Mock Tests

We have organized 10 sets of mock tests in the same format as the actual exam, featuring 120 questions across 6 subjects and a 180-minute duration. Scores are based on the passing score (40 points per subject, 60 points average), and tapping a question on the results screen takes you directly to the explanation. Your highest scores and test history are also managed.

**Learning from Concepts Tab** Frequency of Questions by Session (Premium)

We analyzed 1,658 questions from 14 sessions between 2018 and 2022 to identify key topics by subject. It helps you use your limited time effectively in areas that appear in almost every session, such as defect count and reliability, industrial safety regulations, and presses and shears.

Detailed Explanations

Explanations are provided for every question. You can move on without just checking the answer, understanding the concepts behind why that answer is correct. We have also summarized the legal basis of frequently tested industrial safety and health laws. You can preview up to 5 sessions of detailed explanations for free to delve deeper into the subject.

Various Solution Modes

You can select and solve problems by subject or chapter, and progress and proficiency levels are displayed for each chapter. You can start with unsolved problems or focus on tackling weak chapters. You can also practice like a real exam using Shuffle Mode, where questions appear randomly from all subjects.

Built-in Scientific Calculator

A scientific calculator is available for immediate use without leaving the screen while solving problems. It supports trigonometric functions (sin, cos, tan), logarithms (log, ln), square roots, powers, and pi, allowing you to solve problems requiring calculations on the spot, such as quantitative assessments of reliability and risk.

FSRS Smart Review

It extends the review interval for questions you answer correctly and quickly revisits questions you frequently get wrong. You don't need to create a review schedule yourself; the app takes care of the questions you need to review today.

Review Notifications

It reminds you of review time just when you are about to forget. Daily study reminders help maintain your study flow.

Weakness Analysis Heatmap

View correct answer rates by subject and unit at a glance. Colors change based on the correct answer rate, allowing you to visually identify your weak areas and move directly to solving those units. As the exam approaches, the priority of weak areas automatically increases.

Review Box & My Notes

Gather incorrect answers and questions to review in one place. You can leave your own notes for each question, and view your organized notes all at once in My Notes. Learning Statistics and Continuous Study

Check your daily problem-solving count, accuracy rate trends, and continuous study days in real-time. Records that accumulate little by little each day help build consistency.

Exam Schedule D-Day

Check the upcoming Industrial Safety Engineer written exam schedule directly on the home screen. If you select the date you wish to take the exam within the session period, your study pace will automatically adjust to the remaining time.

Light or Dark Theme

You can follow the system settings or choose your own, ensuring comfortable viewing even when studying late at night.

Tablet Support

You can study comfortably on tablets as well as mobile phones with a layout optimized for large screens.

Offline Study

You can solve problems even without an internet connection. Study without interruption on the subway, at construction sites, or on airplanes.

[Content Guide]

The Industrial Safety Engineer exam does not include past exam questions. This is because the Industrial Safety Engineer written exam is conducted as a Computer-Based Test (CBT), so actual exam questions are not publicly disclosed. Furthermore, since the copyright for past questions belongs to the administering body, copying and pasting them verbatim is not permitted. Instead, we analyzed the National Competency Standards (NCS) criteria and created study questions tailored to the format and difficulty level of the actual exam. The questions are composed of core question types with a high probability of appearing on the exam, and we do not restore or duplicate past exam questions.

This app is intended for studying for the Industrial Safety Engineer written exam; content for the practical exam is not provided separately.

This app is an independent private learning tool designed to assist with studying for the Industrial Safety Engineer written exam. It is not affiliated with or represents any government or public institution, such as the Human Resource Development Service of Korea (HRDK) or Q-Net.

[Recommended for]

Those preparing for the Industrial Safety Engineer written exam for the first time

Office workers who need to pass on the first try to be appointed as a Safety Manager

Construction and equipment practitioners in their 30s and 40s who lack study time due to field work

Those who want to study briefly by utilizing their commute time

(c) 2026 DAYLAB, contact@daylab.dev

[Terms and Policies]

Terms of Use: https://dayprep.co/safekisa/terms

Privacy Policy: https://dayprep.co/safekisa/privacy ## Rankings - #1,685,192 — 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.CAMERA` - `android.permission.FOREGROUND_SERVICE` - `android.permission.INTERNET` - `android.permission.POST_NOTIFICATIONS` - `android.permission.READ_APP_BADGE` - `android.permission.RECEIVE_BOOT_COMPLETED` - `android.permission.RECORD_AUDIO` - `android.permission.SYSTEM_ALERT_WINDOW` - `android.permission.USE_BIOMETRIC` - `android.permission.USE_FINGERPRINT` - `android.permission.VIBRATE` - `android.permission.WAKE_LOCK` - `com.anddoes.launcher.permission.UPDATE_COUNT` - `com.android.vending.BILLING` - `com.android.vending.CHECK_LICENSE` - `com.google.android.c2dm.permission.RECEIVE` - `com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE` - `com.google.android.gms.permission.AD_ID` - `com.htc.launcher.permission.READ_SETTINGS` - `com.htc.launcher.permission.UPDATE_SHORTCUT` - `com.huawei.android.launcher.permission.CHANGE_BADGE` - `com.huawei.android.launcher.permission.READ_SETTINGS` - `com.huawei.android.launcher.permission.WRITE_SETTINGS` - `com.majeur.launcher.permission.UPDATE_BADGE` - `com.oppo.launcher.permission.READ_SETTINGS` - `com.oppo.launcher.permission.WRITE_SETTINGS` - `com.sec.android.provider.badge.permission.READ` - `com.sec.android.provider.badge.permission.WRITE` - `com.sonyericsson.home.permission.BROADCAST_BADGE` - `com.sonymobile.home.permission.PROVIDER_INSERT_BADGE` - `dev.daylab.safekisa.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` - `me.everything.badger.permission.BADGE_COUNT_READ` - `me.everything.badger.permission.BADGE_COUNT_WRITE` ## Similar extensions and apps - [산업안전기사-기출문제,음성듣기,해설강의](https://chrome-stats.com/d/com.kanomsoft.sanupjongmin) — 588 users - [산업안전기사 필기 CBT｜시나크](https://chrome-stats.com/d/com.sinak.safety_engineer) — 2,780 users - [합격 산업안전기사 기출문제](https://chrome-stats.com/d/com.edurocket.safetyE) — 4,709 users - [가벼운 산업안전기사 필기 기출문제 - 시험대비 문제풀이](https://chrome-stats.com/d/hoho.examengine.isa) — 16 users - [떠먹: 산업안전기사 필기 기출문제](https://chrome-stats.com/d/kr.co.ducksducks.g1910100) — 104 users - [유월드 기출 - 산업안전기사](https://chrome-stats.com/d/com.uworld.uworldexam8200040301) — 1 users - [산업안전기사 기출문제](https://chrome-stats.com/d/com.jwlee.quiz) — 7,654 users - [원펀: 산업안전산업기사 기출, 음성듣기, 해설](https://chrome-stats.com/d/com.onepunch.indsafetyind) — 8 users - [날먹: 산업안전기사 필기 기출문제 + 모의고사](https://chrome-stats.com/d/kr.co.nalmuk.g1910100) — 779 users - [콕콕 산업안전기사 자격증 기출문제](https://chrome-stats.com/d/com.edukok.safetyE) — 2,975 users - [전기산업기사 필기 CBT｜시나크](https://chrome-stats.com/d/com.sinak.electric_industrial_engineer) — 300 users - [원펀: 건설안전기사 기출, 음성듣기, 해설](https://chrome-stats.com/d/com.onepunch.cnsafety) — 29 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/dev.daylab.safekisa)