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Response from developer
안녕하세요~! ssinnal 님. 소중한 리뷰 감사 드립니다! 앞으로도 꾹으로 계속 발전 하길 바라요 💚

Track your habits by stamping them on a calendar. This app allows you to create custom stamps with colors and emojis, and view your progress through various reports. It offers lock screen and widget integration for easy access.
1.5.0
September 16, 2026
■ 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.
More안녕하세요~! ssinnal 님. 소중한 리뷰 감사 드립니다! 앞으로도 꾹으로 계속 발전 하길 바라요 💚
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.
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.
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.
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.
Yes, 꾹 contains advertisements, as indicated by its 'hasAds' flag.
꾹 is supported on Apple Watch and iPhone, as indicated by its 'supportedDevices' field.
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.
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.