# 자격증마스터

> Perfectly prepare for past exam questions for 23 national technical certifications offline! We guide you to the path of success with AI explanations and a smart review system.

Canonical page: [https://chrome-stats.com/d/com.min21.cert\_master](https://chrome-stats.com/d/com.min21.cert_master)

## Overview

- **ID:** `com.min21.cert_master`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** OneManForge
- **Category:** EDUCATION
- **Downloads:** 32
- **Version:** 1.0.0
- **Last updated:** 2026-06-26
- **First published:** 2026-06-26
- **Publisher country:** KR
- **Size:** 29 MB
- **Data as of:** 2026-09-12
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.min21.cert_master)
- **Website:** [https://cert-master-min21.web.app/](https://cert-master-min21.web.app/)
- **Privacy policy:** [https://leeminq1.github.io/cert\_master\_app/](https://leeminq1.github.io/cert_master_app/)

## Description

Certification Master is an offline learning app designed for students preparing for 23 national technical certification exams, including Engineer, Industrial Engineer, and Craftsman certifications.<br><br>Key Features<br><br>- Complete Support for 23 Certifications<br>- Provides a database of over 5,000 past exam questions across various categories, such as Information Processing Engineer, Forklift Operator Craftsman, and Electrical Engineer.<br><br>- Fully Offline Mode<br>- Study anywhere, such as on the subway or bus, without worrying about data usage. You can access all questions and explanations even without an internet connection.<br><br>- 4-Level Personalized Explanations<br>- Beyond simply checking answers, it provides detailed explanations organized step-by-step, covering background knowledge, key concept solutions, exam tips, and memorization techniques.<br><br>- Algorithm-Based Smart Review<br>- Automatically calculates review cycles based on your level of understanding. You can easily manage your study status using &quot;Let&#39;s Review Again&quot; and &quot;I Understood&quot; buttons.<br><br>- Incorrect Answer Notes and Bookmarks<br>- Collect incorrect answers and important questions separately for efficient review.<br><br>- Dark Mode Support<br>- Supports both Light and Dark modes to reduce eye strain during long study sessions. With Certification Master, you can effectively achieve your goal of passing in a short period. Start right now.

## Rankings

- #2,425,548 — 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.INTERNET`
- `android.permission.POST_NOTIFICATIONS`
- `android.permission.RECEIVE_BOOT_COMPLETED`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.gms.permission.AD_ID`
- `com.min21.cert_master.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.min21.cert_master)