For the Hygienist written exam, how you review is more important than how many questions you solve.
DayPrep focuses on a learning flow that highlights your weaknesses and brings back problems you've already solved before you forget them. You can study continuously within a single app, from 3,800 self-created questions across 6 subjects to practice mock exams, error notes, and FSRS smart review.
[Key Features]
3,800 Self-Created Questions for 6 Subjects
Learn the full scope of Public Health, Environmental Hygiene, Food Hygiene, Sanitary Entomology, and Hygiene-Related Laws by subject and unit. These questions were created based on the publicly available official exam scope and learning objectives.
Laws Based on Current Standards
Hygiene-related laws are frequently amended. The terminology in the questions and explanations is organized according to current standards, and we continuously reflect any changes in standards as they are confirmed.
Concept Lessons and Study Tabs
Concepts are organized into 301 lessons. If you get stuck while solving a problem, you can skip directly to the lesson connected to that problem. Answer Explanations and Detailed Option Analysis
Check the correct answer and key explanation for each question. The detailed explanation allows you to examine key concepts alongside each option, helping you clarify the reasons for your confusion.
Problem Solving by Subject and Unit
Select the subjects and units you wish to study. On the "All Questions" screen, you can find the questions you need using search, filter, and sort functions.
Start Diagnosis and Today's Recommendations
Initial diagnostic questions help you check your current status. As your study history accumulates, recommended sets reflecting your weak subjects and questions to review will be provided.
FSRS Smart Review
Adjust the review interval for each question based on your memory status. Since it collects and displays questions due for review, you do not need to calculate your schedule manually.
Review Notifications
Notifies you of today's study and review at your set time. This helps you maintain a consistent study flow.
Weakness Heatmap and Frequency of Appearance
Compare correct answer rates by subject and unit using color coding. You can identify weak areas and the frequency of appearance by unit, and jump directly to the relevant questions. Incorrect Answer Notes and Questions to Review
Incorrect answers are automatically collected, and you can manually add specific questions to your review box. Leave your own notes for each question to review together during your next session.
Practical Mock Tests
Solve 220 questions tailored to the official exam format within 195 minutes. Check your results against passing criteria and manage your highest scores and test records.
Learning Status and Continuous Study
On the home screen, check the number of questions solved today, cumulative correct answer rate, progress by subject, and consecutive study days. You can also view your highest mock test scores and study records.
Exam Schedule D-Day
Check the upcoming Hygienist exam schedule and remaining days directly on the home screen. You can also select the specific exam session you are preparing for.
Pre-Exam Checklist
As the exam approaches, review your preparation items, such as the test center, entry time, test admission ticket, identification, and permitted calculators.
Light/Dark Themes
You can customize your system settings or select between Light and Dark themes. Offline Learning
Question data is securely stored on your device, allowing you to continue solving problems and reviewing even in areas with unstable internet connections.
Guest Start and Device Sync
You can start immediately without signing up. Once you log in, your study history, review schedule, incorrect answer notes, and memos will sync to your account, allowing you to continue studying on other devices.
[Content Guide]
Questions and explanations are created in-house based on the publicly available official exam scope and learning objectives. We do not restore or duplicate actual exam questions.
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This app is an independent private learning tool and is not affiliated with or represented by any exam administering body, government, or public institution. Passing the exam is not guaranteed; please refer to the official announcements from the administering body for exam information.
[Recommended for]
Those preparing for the Hygienist exam for the first time
Students aiming to pass through self-study
Those confused about which standards apply due to legal revisions
Those who find it difficult to manage their incorrect answers and review schedules on their own
Those who wish to engage in short, repetitive study sessions while balancing academics or work
[Customer Support]
Inquiries: contact@daylab.dev
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© 2026 DAYLAB
[Content Source and Non-Governmental Information]
This app is an independent, private learning tool designed to assist with studying for the Hygienist exam. It has no affiliation, sponsorship, or approval relationship with implementing agencies, government bodies, or public institutions, such as the Korea Health Personnel Licensing Examination Board, and does not represent any of them. It does not act as a representative of government agencies or political organizations, nor does it guarantee passing. Please check the latest announcements from the implementing agencies below for exam schedules and detailed criteria.
Official Exam Schedule, Registration, and Subject Information: https://www.kuksiwon.or.kr/
3,800 Hygienist practice questions and 10 sets of practice mock exams. Immediately resolve your difficulties with concept lessons.