# 꾹 - 잠금화면에서 찍는 습관 도장 — 도장 꾹, 습관도 꾹 > Habit tracking app with a unique stamp-based calendar interface. (iPhone/iPad app by Sangcheol Kim.) - Source: https://appshunter.io/ios/app/id6797384948 (this page in markdown: same URL + `.md`) - Developer: [Sangcheol Kim](https://appshunter.io/developer/6786085612) - Category: Productivity, Lifestyle - Price: Free - Age rating: 4+ - Requires: iOS 18.0 · 81 MB - Languages: Korean, American English - Released: 2026-08-13 - Data updated: 2026-09-17 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/id6797384948/reviews.md ## What is 꾹? 할 일 목록은 다 하면 지워져요. 꾹은 반대예요. 해낸 날에 도장이 하나씩 남아요. 오늘 도장 하나 꾹 찍고, 그게 달력에 쌓이는 걸 보는 앱이에요. ■ 앱을 열지 않고 찍어요 앱을 한 번 열면 오늘 도장판이 잠금화면과 다이나믹 아일랜드에 떠요. 한동안은 앱으로 돌아가지 않아도 거기서 바로 꾹 찍을 수 있어요. 홈 화면 위젯의 도장을 눌러서 찍어도 돼요. ■ 꾹 눌러야 찍혀요 탭 한 번으로 지나가지 않아요. 손가락을 올리고 잉크가 다 찰 때까지 기다리면 도장이 찍혀요. 잘못 눌렀으면 손가락을 옆으로 밀어서 취소해요. ■ 내 도장 만들기 16가지 색과 이모지로 나만의 도장을 만들어요. 무슨 요일에 몇 번 할지, 어느 그룹에 넣을지, 몇 시에 알림을 받을지 도장마다 따로 정해요. ■ 쌓인 기록 보기 · 달력 — 이번 달에 찍은 도장을 한 판에서 봐요. · Journal — 도장 옆에 그날의 메모와 사진을 남겨요. · 리포트 — 주·월·연 단위로 얼마나 지켰는지 봐요. 보고 있는 기간을 CSV 파일로 내보낼 수 있어요. · 월간 리뷰 — 매달 지난달을 돌아봐요. ■ 홈 화면 위젯 7가지 오늘 도장 · 최근 체크인 · 달력 · 위클리 리포트 · 먼슬리 리포트 · 그룹 위클리 · 큰 달력. 작은 것부터 큰 것까지 골라서 올려 둬요. ■ 취향대로 한글 서체 16가지, 밝게 · 어둡게 · 기기 설정 따라가기. 세로 화면 전용이에요. 이용약관 https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ 개인정보 처리방침 https://kkuk-app.web.app/privacy/ ■ 기록은 기기에 남습니다 도장과 메모, 사진은 사용자의 기기에 저장됩니다. iCloud 동기화는 기본으로 꺼져 있고, 켜면 사용자 본인의 iCloud 비공개 데이터베이스로만 복제됩니다. 개발자는 이 기록을 읽을 수 없고 별도의 서버에 보관하지 않습니다. ## Key features - Stamp habits on a calendar - Customizable stamps with colors and emojis - Lock screen and widget integration - Journal entries with photos and notes - Weekly, monthly, and yearly reports - CSV export of reports - Home screen widgets ## Recent user reviews (1 of 1) All indexed reviews: https://appshunter.io/ios/app/id6797384948/reviews.md ### 5/5 — 좋아요 *2026-08-28* 미션 성공 하고 저 스스로에게 선물 줍니다 **Developer response:** 안녕하세요~! ssinnal 님. 소중한 리뷰 감사 드립니다! 앞으로도 꾹으로 계속 발전 하길 바라요 💚 ## Frequently asked questions about 꾹 ### What is 꾹's main purpose? 꾹 is designed to help users track their habits by stamping them on a calendar. It focuses on visualizing progress by accumulating stamps over time, offering a unique alternative to traditional to-do list apps. ### Can I stamp habits without opening the 꾹 app? Yes, once the app is opened, today's stamp board appears on the lock screen and Dynamic Island. You can stamp directly from there without returning to the app, and also via home screen widgets. ### How does 꾹 handle habit creation? You can create personalized stamps using 16 different colors and emojis. For each stamp, you can specify the days of the week, frequency, group, and set reminder times. ### What reporting features does 꾹 offer? 꾹 provides a calendar view for the current month's stamps, a Journal feature for daily notes and photos, and reports for weekly, monthly, and yearly habit adherence. Reports can be exported as CSV files. ### Does 꾹 have ads? Yes, 꾹 contains advertisements, as indicated by its 'hasAds' flag. ### What platforms is 꾹 available on? 꾹 is supported on Apple Watch and iPhone, as indicated by its 'supportedDevices' field. ### How is my data stored in 꾹? Stamps, notes, and photos are stored locally on your device. iCloud synchronization is off by default but can be enabled to replicate data to your private iCloud database; the developer cannot access this data. ### What is the update frequency of 꾹? The latest version, 1.5.0, was released on September 16, 2026, indicating a recent update. The app was initially released on August 13, 2026. ## Version history (last 5 releases) ### 1.5.0 — 2026-09-16 ■ Set a finish line for a stamp Pick an end — 30 days, or 100 times — on the New stamp or Edit stamp screen. The stamp's detail and Report show how far along you are. It's free. ■ Your past records count Add a finish line later and nothing resets. A stamp you've kept for a while starts out well along. ■ A celebration when you get there Fill what you set and KKUK celebrates. Keep stamping after that. ### 1.4.0 — 2026-09-10 ■ 64 ink colors KKUK Premium now includes the Pastel, Summer and Autumn themes. On the New stamp screen, pick a theme to see its colors. ### 1.3.2 — 2026-09-04 ■ Privacy choices in Europe In the EEA, the UK, and Switzerland, KKUK now asks once how your information may be used for ads. You can change your answer any time in Settings → About → Privacy Options. Nothing changes elsewhere. ### 1.3.1 — 2026-09-02 ■ Fixed check-in from notifications Tapping Check-in on a stamp reminder could quit the app, or leave no stamp at all. It now stamps right there — on your Apple Watch and on your iPhone. ### 1.3.0 — 2026-08-31 ■ Stamp from your Apple Watch See today's habits on your wrist and stamp right there. For habits you do several times, open the habit and turn the crown to raise the count — finish everything for today and a celebration shows up. Stamped by mistake? Tap the habit or swipe left to undo. ■ Today's progress on your watch face Choose from four complications. A glance at your face tells you how many stamps you've made today and what's still left. ■ Check in straight from a notification Swipe a stamp reminder and Check-in appears. It stamps right there, without opening the app. ■ Take one stamp back Stamped one too many on a habit you do several times a day? Open the habit and tap Remove one. On the calendar record card, touch and hold the count instead. ## More apps by Sangcheol Kim - [PhotoChagok – Photo Organizer](https://appshunter.io/ios/app/photochagok-photo-organizer/id6786085610) - [멍냥첫날 - 강아지 고양이 예방접종 일정](https://appshunter.io/ios/app/id6809621004) - [구독모아 - 쉬운 구독 관리](https://appshunter.io/ios/app/id6810900822) All apps by Sangcheol Kim: https://appshunter.io/developer/6786085612 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-09-17.*