This app visualizes your time with both Western and Japanese calendars, allowing you to register special dates and track yearly progress. It offers customizable themes and integrates traditional Japanese seasonal markers.
1.8.0
August 16, 2026
ChronoRainbow now includes nine display themes: Simple, Pop, Fantasy, Japanese, Natural, Underwater, Starry, Retro, and Cyber. Japanese and Natural themes change with the seasons, while Pop, Starry, and Underwater add gentle ambient motion. These effects respect the Reduce Motion accessibility setting. Chrono Rainbow will continue to evolve little by little, bringing gentle color and harmony to your time. If you enjoy Chrono Rainbow, leaving a star rating would mean a lot and greatly support its development. We will keep creating updates that give you more freedom to enjoy your time in every color of the rainbow.
MoreYour time becomes a beautiful work of art.
レビューありがとうございます！ たくさんの星をいただいて、パンダも大喜びです！！ Chrono Rainbowで大切な時間を彩っていただけると嬉しいです。 これからもChrono Rainbowをよろしくお願いします。
Chrono Rainbow is a calendar application that beautifully visualizes both Western and Japanese calendars. It allows users to register special dates, discover seasonal rhythms, and visualize their yearly progress through a unique rainbow interface.
No, Chrono Rainbow does not contain advertisements, offering an uninterrupted user experience.
Chrono Rainbow offers the 'Chrono Colors Plan' with monthly ($0.29) and yearly ($2.99) subscription options. These plans unlock exclusive Japanese-inspired colors and unlimited event registrations.
The free version of Chrono Rainbow allows event registration, but the 'Chrono Colors Plan' subscription provides unlimited event registrations for a richer experience.
Chrono Rainbow includes traditional Japanese seasonal markers such as solstices and equinoxes. Subscribers can also access exclusive traditional Japanese color palettes.
Chrono Rainbow is available on iPhone and iPad devices.
The latest version of Chrono Rainbow is 1.7.1, last updated on February 2, 2026. The developer is committed to continuous evolution with new ideas and features.
Chrono Rainbow has an age rating of 4+, making it suitable for a wide range of users.
