Our users could view 30-days forecasts by rotating the crown, still keeping the calendar feature. When rotating the crown, a cursor scroll along the dial, each dots along the dial represent a calendar day. When tapping into the period App, user lands on the circular calendar page, in a beautiful organic shape. Each dots has color that representing period prediction status, as you scroll along, the main screen switches notifying our users prediction on specific days.

We kept the original calendar color system from previous versions, and assign each type of day with specific color. As user turn the crown to scroll across the dynamic dial calendar, the color changes in gradient corresponding to specific date.

I led and drafted this proposal in Q4 2021, just before the end of my internship. A year later, my colleague from Xiaomi contacted me to inform me that they had chosen to adopt this plan for future product designs. Ultimately, it was implemented in the Model S1, S2, and S3, which were released between 2022 and 2023.