SiCal
Decentralized Calendar
About
This private calendar app utilizes a decentralized network for secure storage and management of your schedule. It allows for event creation, organization across multiple calendars, and import of existing files, all without requiring a traditional account. Your data is secured by a recovery phrase for easy restoration and control.
What's New in SiCal
0.1.3
July 3, 2026
Bugfixes related to syncing, multiple calendars, and event deletion.
Developer apps
FAQ
What makes SiCal different from other calendar apps?
SiCal stands out by using decentralized storage on the Sia network, meaning your calendar data is not held on a central server. This approach enhances privacy and user control, as you don't need a traditional account and can restore access with a recovery phrase.
How does SiCal ensure user privacy and data security?
Privacy is a core feature of SiCal. Your calendar data is stored decentrally and is tied to your unique recovery phrase. This means only you have direct access to your information, and it's not managed by a third-party company.
Can I import my existing calendar events into SiCal?
Yes, SiCal supports importing existing calendar files, including the common ICS format. This allows you to easily transition your current schedule into the decentralized system without losing your past events.
What devices is SiCal compatible with?
SiCal is designed for mobile use and is available on iPhones and iPads. It leverages the portability of these devices for on-the-go schedule management.
Does SiCal require an internet connection to function?
While the decentralized storage relies on the Sia network, the app itself offers sync support and event reminders. For full functionality and to ensure your schedule is up-to-date, a stable internet connection is recommended.
How often is SiCal updated?
SiCal received its latest update on July 3, 2026, with version 0.1.3. This indicates a commitment to ongoing development and improvements for the application.
What is the age rating for SiCal?
SiCal has an age rating of 4+, making it suitable for a wide range of users. This rating suggests that the content within the app is appropriate for young children and older audiences alike.
Does SiCal have ads?
No, SiCal does not contain advertisements. The app is free to use and was funded by a grant from the Sia Foundation, allowing for an ad-free user experience.
