SiCal
Decentralized Calendar
Free · Designed for iPad. Not verified for macOS.
SiCal is a private calendar app built on the decentralized Sia network. Create, organize, and manage your schedule without relying on a traditional central server or account-based calendar platform.
With SiCal, you can create and edit events, manage multiple calendars, import calendar files like ICS, and stay on top of your schedule with event reminders and alerts. Your calendar data is tied to your recovery phrase, giving you a portable way to restore access and keep control of your information.
Key features:
-Decentralized calendar storage powered by Sia
-Create, edit, and organize events across calendars
-Import existing calendar files including ICS
-Event reminders and alerts
-Sync support to keep your calendar up to date
-Restore access with your recovery phrase
-No traditional account required
-SiCal is designed for people who want a calendar that is practical, mobile-friendly, and more aligned with user ownership and privacy.
This app was funded by a grant from the Sia Foundation.
Ratings & Reviews
- This app has not received enough ratings or reviews to display an overview.
The developer, Mitchell May, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Provider
- MMAY DEV LLC
- Size
- 34.6 MB
- Category
- Productivity
- Compatibility
Requires iOS 13.0 or later.
- iPhone
Requires iOS 13.0 or later. - iPad
Requires iPadOS 13.0 or later. - iPod touch
Requires iOS 13.0 or later. - Mac
Requires macOS 11.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Copyright
- © 2026 MMAY DEV LLC