Harukkuk
One-tap diary that stays yours
Free · Designed for iPad. Not verified for macOS.
Harukkuk is a diary app for everyone, with extra features students find useful — a study timer, timetable, and D-day countdowns — plus recommended presets for office workers, freelancers, and homemakers. No account, no server. Everything you write stays on your phone.
** Add an event in three seconds
• Type a title in the center ＋ tab; date, time, and category fill themselves in
• Frequent items are one-tap chips that float up the more you use them
• "Add this now?" — it learns your patterns and suggests first
** A calendar you can read at a glance
• Month view with event chips, multi-day bars, public holidays, solar terms, and observances
• Swipe a day up to see its events, to-dos, and study time on one screen
• Exam D-days, lunar-calendar birthdays, repeating events, overlap warnings before you save
** Study timer and stats
• Track by subject or task; tapping another item saves and switches automatically
• Sessions over five minutes are logged to the calendar as events
• Weekly, monthly, and yearly stats with per-item share; a "day starts at" setting counts late-night study toward the previous day
** To-dos with sub-steps
• Add without a date, drag to reorder, completed items grouped away
• Checklists attached to events show up in the to-do view too
** Habits as stickers
• Shake your phone to open today's sticker sheet
• Streaks and goal progress bars make consistency visible
** Memos
• Tag each line with a category and browse by tag
• Attach photos and links; pin a memo to the dock to open it from any tab
** Reminders
• Per-event alarms plus a reminder series every 10 minutes from 60 minutes before
** Make it yours
• 6 skin presets, accent colors, 4 fonts, 4 text sizes
• 5 timer-screen skins
** Works with your other calendars
• Import from the phone calendar (Google, Samsung, and more) and export back to it
• Import ICS files from Naver or Google Calendar, share as ICS
** Your data stays on your phone
• Stored on the device only — no server, no ads, no tracking
• Save backups where you choose (Drive, iCloud) and restore anytime
• Korean, English, and Japanese
Questions? Email beatories@gmail.com.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
D-day just got a lot more useful.
• D-day list: see upcoming and past D-days at a glance from the Summary tab or the home D-day chips, and add one with ＋
• Pinned D-day: long-press to pin one — it shows as a big card at the top of Summary and first among the home chips
• Yearly D-days, and "day n" counting with a heads-up every 100 days
• Emoji and color for each D-day
• Reminders: D-7 and D-1 at 9 AM; for "day n" counts, on each 100-day mark
• Home Screen widget (iPhone & iPad): your pinned and upcoming D-days right on the Home Screen
Also
• Typing dates by hand (like your birth date) is more forgiving — 1999.11.11 and 19991111 both work, from 1900 onward
• A small banner ad now appears at the bottom of the app. Your schedules and memos stay on your device as before; see the privacy policy for details.
The developer, Yang Koo Kang, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Yang Koo Kang
- Size
- 47.9 MB
- Category
- Productivity
- Compatibility
Requires iOS 15.0 or later.
- iPhone
Requires iOS 15.0 or later. - iPad
Requires iPadOS 15.0 or later. - iPod touch
Requires iOS 15.0 or later. - Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
English and 2 more
- English, Japanese, Korean
- Age Rating
4+
- 4+
- Contains
Advertising
- Copyright
- © 2026