Additional features
✓ Scheduler automatically syncs across browsers and devices
✓ Create recurring events daily, weekly, monthly, yearly or on an individual basis.
✓ Use as an appointment planner in local or foreign time zones
✓ Manage up to 20 calendars (paid feature)
✓ View your agenda on your home screen with the Proton Calendar widget.
✓ Add multiple reminders for any event
✓ Use as daily planner or monthly planner by switching between different views
✓ Choose to view event schedule in dark or light mode.

PRIVATE CALENDAR
✓ No ads, no trackers and no sharing of data with third parties
✓ Unlike other popular calendar apps, we cannot track your activity or misuse your data.
✓ End-to-end encryption – fully encrypted communication between Proton Calendar users
✓ Zero Access Encryption – Event names, descriptions and attendees are encrypted on our servers
✓ Based in Switzerland 🇨🇭 – All your data is protected by strict Swiss privacy laws.

USERS FIRST
Building an internet that puts people ahead of profit
✓ Funded by users, not advertisers – privacy is our business model.
✓ Created by scientists and engineers who met at CERN and MIT and founded ProtonMail.
✓ Used by famous journalists and organizations around the world.
✓ GDPR and HIPAA compliant
✓ Based in Switzerland and protected by some of the strictest privacy laws in the world.

What others say about the Proton calendar
“ProtonMail has now made it easy to encrypt your schedule. Knowing what you plan to do, where and with whom can be just as important as the messages you send and receive.” Gizmodo