Cyrus Calendar
The imperial Iranian calendar
Cyrus Calendar is more than a way to read dates. It begins time at the founding of the first pan-national state (559 BCE) and treats the calendar as a quiet symbol of identity — a 2,500-year line connecting today to an ancient civilization.
It keeps the scientific accuracy of the Jalali solar calendar — among the most precise in the world — while the year opens with the vernal equinox and Nowruz. Our job was to honor that weight without making it heavy: bilingual English and Persian, careful typography, and a reading experience that feels both modern and rooted.
- Category
- Productivity
- Platforms
- iPhone, iPad, Mac, Apple Watch, Apple Vision
- Languages
- English, Persian
- Shipped
- 2025
An imperial epoch
Time counted from the start of Cyrus the Great’s reign in 559 BCE — a calendar centered on Iran’s own history.
Jalali precision
Built on the structure of the Jalali calendar, one of the most astronomically accurate solar systems in the world.
Nowruz & the equinox
The year begins at the vernal equinox, keeping the deep link between Iranian tradition and the turning of the seasons.
Bilingual by design
A considered English and Persian experience, with typography and layout that respect both scripts.
On your wrist
An Apple Watch companion keeps the calendar a glance away.
Privacy first
The app collects no data — identity without surveillance.
Our role
What Fill Studio did
- Concept and positioning for a culturally-rooted productivity app
- Bilingual (English / Persian) interface and typographic system
- Calendar interaction model spanning iPhone, iPad, Mac, and Apple Watch
- Visual identity that balances heritage with a modern, restrained feel