ONSEN
COMING SOON
ONSEN PLANNER
Finally, a calendar that thinks in weeks.
"What week is the meeting?" If you think this way, this app is for you.
Week Numbers
Holidays
Events
Trips
Expenses
Contacts
●
WHY ONSEN?
"Week 23?"
ISO 8601 Standard
Multiple Regions
Global Holidays
Home Screen
Widgets Ready
Birthdays
Never Forget
○
BUILT FOR PEOPLE WHO...
Think in week numbers
Live between countries
Hate cluttered apps
Love good design
※
IN ACTION
DASHBOARD
Your day at a glance with bento-style widgets
★ SPECIAL DAYS
WEEK CALENDAR
★
FEATURES
Weeks
Holidays
Notes
Expenses
Clocks
Widgets
Trips
Contacts
Birthdays
Export
Black borders. Solid colors.
Information, not decoration.
◉
UPDATES
2026-01-16
Swipe navigation with carousel wrap-around
2026-01-15
Nordic region: Iceland, Greenland, Faroe Islands
2026-01-14
Random Facts with shareable PNG meme cards
2026-01-13
CSV export for expenses
2026-01-12
PDF export for calendar views
2026-01-11
16 holiday regions worldwide
2026-01-10
Nordic countries: Norway, Denmark, Finland
2026-01-07
Website launched with Information Design styling
2026-01-06
Contacts redesigned with LINE-style actions
2026-01-05
12 holiday regions now supported
2026-01-02
SwiftData migration complete
Coming to App Store
Follow development on GitHub
iOS 18+
SwiftUI
SwiftData
WidgetKit