열공메이트 - 공부타이머·수능 공시생 플래너

열공메이트-공부타이머 집중모드 수능플래너

About this app

Stop timers that just measure time! A study timer + planner that shows you a score based on your concentration.

From preparing for the CSAT, school grades, civil service exams, and professional certifications, the level of concentration varies even when studying for the same hour.

Yeolgong Mate is a study app that tells you "how much you focused" rather than "how long" using a concentration density score, and allows you to manage your study plans all at once with its weekly planner.

1. Weekly Planner — From Planning to Execution, All in One Place

Arrange your study plans on the daily schedule and compare your actual study volume against your plan at a glance.

You can manage recurring weekly schedules and one-time "this week only" plans separately. Skip academy cancellations or school closures to "This Week Only," and move unfinished plans to "Postpone to Another Day."

Register your exam or mock test D-Day and tasks to prepare, and it will keep track of the remaining days and your progress.

2. Focus Density Score — A feature not found in other study timers

You earn a high score by completing the timer to the end, minimizing pauses, and studying without interruption.

SS (Legend) > S+ > S > A > B > C

The higher your grade, the more focused you are. No matter how tough the day, you start at least at C.

Focus Density is a reference score to help you reflect on your focus habits. Check your focus for the day with a grade instead of just seeing study time as a number.

3. Lock Your Phone and Study — 3-Level Focus Lock

Focus Challenge: Study with the screen on. It is recorded if you switch to another app, and you earn a "Verified" certification upon completing the session with zero interruptions.

Ultra Focus: The timer stops if you leave, and you must copy the challenge phrase to return. This is the most powerful lock.

Study Comfortably: It is OK to turn off the screen. Only the timer runs quietly without notifications. Recommended for when you want to start without pressure.

4. Research-Based Learning Methods — Start with a Single Touch

You can start a learning routine based on pedagogical and psychological research with a single tap. We recommend methods tailored to your grade level.

Interleaving: Alternating subjects helps you remember longer (Rohrer & Taylor, 2007)

The 52-17 Rule: 52 minutes of focus + 17 minutes of complete rest (DeskTime work data analysis)

Ultradian 90: The human natural 90-minute focus cycle (Sleep scientist Kleitman)

Hard Start: Tackle the difficult parts first; the brain will follow up (Barbara Oakley, 'A Mind for Numbers')

Test Loop: Solving problems is a powerful form of review in itself (Roediger & Karpicke, 2006)

5. Timers to Suit Your Study Style

Countdown, Free Stopwatch, Pomodoro, Lap Timer, and even a Continuous Mode that automatically runs multiple subjects in succession.

We have prepared a CSAT mode that allows you to practice exactly according to the actual exam schedule (80 minutes for Korean, 100 minutes for Math, including breaks), as well as an analog clock styled like a test center wall clock.

6. Study Rooms for Co-study — Study Longer Than Alone

Create a study room with a friend using an invitation code, or join a public lounge to study with others.

Choose your seat from three seating layouts—study cafe, reading room, or classroom—and see who is currently studying in real-time. Each other's concentration serves as motivation.

If you copy an invitation code, the app will automatically detect it and suggest you join.

7. Study Grass — Color Fills in as You Study Every Day

Just like GitHub Grass, the days you studied over the past four months are recorded in a grid. The more time you spend studying, the darker the color becomes. We also display your consecutive study records and your personal best.

8. 5 Home & Lock Screen Widgets

Check your study progress without opening the app with widgets for Today's Study Time, Exam D-Day, Start Subject, Today's Plan, and Today's To-Do. You can also start a timer directly from the widget.

9. Tailored to You

Select your level, ranging from lower elementary grades to civil service exam candidates, and the focus density standards and recommended study methods will be tailored accordingly.

Characters like Toru (Rabbit), Pangi (Penguin), Taco (Rabbit), and Totoro (Gray Rabbit) cheer you on based on your concentration level, while 10 types of white noise—including rain, cafe, and library sounds—help you focus.

10. Statistics and Completely Free Policy

Check your study patterns with daily, weekly, and monthly statistics and study reports.

All features are free, and there are absolutely no ads. It does not distract students from their concentration.

Recommended for:

** For those who study but feel they cannot concentrate or that their efforts are ineffective

For those who find it difficult to focus on their studies due to their phones

Elementary, middle, and high school students preparing for the CSAT or school grades

Civil service exam candidates

Students preparing for certification or language exams

Those who struggle to study alone and need motivation to study with

For those looking for a clean, ad-free timer and planner for free

What’s new

• 오답노트가 새로 생겼어요! 과목·챕터별로 틀린 문제와 메모를 영구 보관하고, 복습 체크·마스터 표시로 '안 본 것'부터 다시 볼 수 있어요.
• 함께 공부하는 스터디룸 — 친구와 방을 만들거나 공개 라운지에서 다른 사람들과 실시간으로 같이 공부해요. 초대 코드를 복사해두면 자동으로 입장을 제안해줘요.
• 할 일에서 바로 '집중 시작'을 누르면 오늘 계획 진행도에도 자동으로 반영돼요.
• 모르고 켜둔 타이머는 종료 화면에서 시간을 바로잡거나 기록을 삭제할 수 있어요.
• 재설치해도 공부 기록이 유지되도록 개선했어요.
• 할 일 목록을 최대 8개까지, 그 외 자잘한 버그 수정과 개선.