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 beatories@gmail.com.