공부잔디 - 공부 타이머 잔디밭

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About this app

🌱 If you study, the grass grows. If you lie, it withers.

Study Grass is an honest study timer that records only "real studying."

What if you leave the timer on and run off to another app? The timer stops automatically.

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■ A Timer Where Lying Is Impossible ⏱

- Press Start Study to start the timer.

- If you move to another app, it automatically pauses after 10 seconds.

- If you study with the screen off? It continues recording normally.

- Cannot manually enter time — the grass grows only with the timer.

■ My Own Study Grass Field 🌱

- Every day you study, one section of grass turns green!

- The more you study, the deeper the green

- View a year's worth of your study progress at a glance — your efforts are visible

- Decorate your own study lawn with 24 color themes

■ Keep the Flame 🔥

- Study every day and your streak (streak) flame grows

- If you skip a day, the flame goes out

- Special badges awarded upon reaching 7, 30, and 100 days

- It's okay to take a day off after exams with the Streak Protection Pass

■ Compete with Friends in Real-Time 🏆

- Add friends via invitation code/QR

- Real-time ranking of today's study time — receive notifications when a friend is ahead

- 1:1 Battle Mode: Compete for weekly study time

- Exchange encouragement with friends via chat

■ Our Class Study Lawn (Group) 🏫

- Create groups by class, academy, or study group

- A shared study lawn combining everyone's study time

- Achieve weekly group goals together

■ Study Proof Shot 📸

- Take a screenshot of your notebook/workbook after the timer ends

- Date and study time are automatically imprinted — No reusing past photos

- Tap the Grass icon to view the day's study records like an album

■ D-Day Mode 📅 During Exam Periods

- Register D-Day for midterms and finals

- Countdown that changes as the exam approaches

- Automatically generates a study report for the period after the exam

■ Other Features

- Home Screen Widget — Check Grass and Streak without opening the app

- Level, Mission, and Attendance System

- Weekly/Monthly Statistics and Subject-Specific Analysis

- Show Off Your Grass — Share on social media with pretty cards

- Dark/Light Mode

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■ Recommended for:

✓ Those who keep getting distracted even after turning on a study timer

✓ Those who always give up on using study planners

✓ Those who want to build study habits with a friend

✓ Those who want their efforts to be recorded as a visible record

■ We treat your personal information with care 🔒

- Study records are saved on the device, and

Nicknames and study times are shared only when using the friend feature

- Access to usage information Permissions are used solely for "confirming when leaving another app while studying."

- Privacy Policy: https://studygrass.web.app

■ Contact Us
Bug reports and feature suggestions are always welcome!

Please contact us via [Send Feedback] in the app or the developer's email.

Start planting a patch of grass today! 🌱
An honest study record built solely with a timer. Build habits with the grass you plant every day and compete with friends.
Updated on
Oct 9, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

- 🎬 타임랩스 60fps · "촬영 중" UI · 인코딩 화면
- 📸 오늘 인증 카드 (테마3·비율2·공유·저장)
- 📷 QR 친구추가 복원
- 🌱 새 앱 아이콘
- 🌐 다국어(한/영) 전면 — 전 화면·알림·공용라벨·data (strings 613키 en/ko)
Content rating
Everyone
Users Interact
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App support

About the developer
송길주
seungwongang38@gmail.com
북악산로 844 성북구, 서울특별시 02828 South Korea