Season Calendar is a lifestyle application available on the iPhone platform. Developed by KOTORIYAMA K.K., this free program falls under the Lifestyle category with a focus on weather, providing users with a unique way to stay informed. The app offers a comprehensive view of Japanese national holidays, moon phases, and the intriguing concept of the seventy-two seasons.

Users can easily access detailed information by tapping on specific dates, revealing columns that elaborate on various seasonal events such as New Year's Day, Hinamatsuri, Tsukimi, Big cleaning, and Japanese cooking recipes. Additionally, the app offers features like 365 days of letters, allowing users to read daily columns for free, a Clover Ticket system for accessing specific columns, and an All-You-Can-Read Pass for ad-free offline reading.