Fillday: Calendar, Todo, Diary
Productivity
Free · Designed for iPad. Not verified for macOS.
The most satisfying way to fill your day — Fillday
Check off a task, and that day's calendar cell fills up with your category's color.
After a month, your calendar becomes your story — you can see what you filled, at a glance.
■ One record, three views
· Calendar — your month, filled with color
· Todo — today's tasks and habit check-ins
· Diary — a line and a sticker to close the day
All three show the same record from different angles. Write anywhere, find it everywhere.
■ To-do categories that work for you
Create categories for study, work, plans, or anything you need. Edit each category's name and color.
Archive categories you don't use often, and bring them back whenever you need them.
■ Turn on only what you need
Habits, mood, D-day counters, deco stickers — everything is a module you can toggle in Settings.
Prefer it simple? Calendar and todo alone work beautifully.
■ Your own water-drop companion
Give it a name, and it wanders your screens, reacting to your day.
Touch and hold your companion, then drag it to a different spot on the screen.
Finish a task and it runs over to celebrate; on quiet days it naps beside your records.
It never nags and never gets disappointed — it is always on your side.
■ Pressure-free by design
No red warnings, no broken-streak marks, no guilt-trip reminders.
Unfinished things simply stay quiet, while everything you did shines in color.
■ Also included
· Home screen widget — today's progress at a glance
· App lock — protect your diary with PIN or biometrics
· Patchwork export — share your month of colors as an image
· Notifications — only when and how you want them
· Korean, English, and Japanese
■ We collect no personal data
Everything you write stays on your device.
No sign-up, no server upload, no ads. Optional encryption for export files.
Start today — fill in just one cell.
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
A simpler way to plan and reflect.
• See events and remaining to-dos on your calendar.
• Create to-do categories and edit their names and colors.
• Edit to-dos directly and start diary entries faster.
• Touch and hold your companion to move it. Roaming is smoother too.
• Improved Korean and Japanese fonts, large text, and time selection.
• Fixed screen refresh after saving, cancelling, and reopening, plus returning from notification settings.
This version requires iOS 15 or later.
The developer, Hyeonwoo Kim, 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
- Hyeonwoo Kim
- Size
- 35.5 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
13+
- 13+
- Copyright
- © 2026 Hyeonwoo Kim