"Solaris apps bring the Calendarium Solaris to your device — calendar, clock, launcher, and more. All apps are currently in beta."
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App downloads are available to registered users.
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Want to test an app? Sign up as a beta tester.
Calendarium Solaris
Android · Calendar App
Beta
The full Calendarium Solaris calendar as a native Android app. Provides appointments, cloud sync, import/export, and the complete web calendar experience — optimised for mobile use. Can also be used as an additional home screen overlay alongside the Solaris Launcher.
- Full calendar with month, week, and day views
- Appointments with end-to-end encryption and sync
- Import & export .ics files
- Date converter (Gregorian ↔ Solaris)
- Works as an additional home screen if Solaris Launcher is installed
- Works offline
Solaris Clock
Android · Clock & Alarm App
Beta
A full-featured clock app showing the current Solaris date and time. Includes alarms, a countdown timer, stopwatch, meditation timer, and breathwork guide. Can also be used as an additional home screen overlay alongside the Solaris Launcher.
- Live Solaris date & weekday display
- Alarms with customisable sounds
- Automatic anchor day alarms (equinoxes & solstices)
- Countdown timer, stopwatch, meditation, and breathwork
- World clock with Solaris time overlay
- Works as an additional home screen if Solaris Launcher is installed
Solaris Launcher
Android · Home Screen Replacement
Beta
Replace your Android home screen with the Calendarium Solaris. The launcher shows the current Solaris date, weekday, and time, with Gregorian date still visible in system notifications for conversion.
- Home screen with Solaris date, weekday & live clock
- Home screen app bar with shortcut keys for quick app access
- Full app drawer with real-time search
- Persistent Solaris date notification (Gregorian date visible for conversion)
- Calendar and Clock apps work as additional home screens if also installed
Solaris Chat
Android & iOS · Matrix Client
Beta
A Matrix protocol messaging client that displays all dates in the Calendarium Solaris. Built with Flutter for Android and iOS. Supports real-time in-chat translation between English, Dutch, Portuguese, French, and German.
- Matrix protocol — open, federated, end-to-end encrypted messaging
- All message timestamps displayed in Solaris format
- Real-time chat translation: English, Dutch, Portuguese, French, German
- Available for Android and iOS
All apps are beta builds. Use the sign-up button on each card to register as a tester. For questions or issues, contact [email protected].