Harukkuk

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 [email protected].