Proton Calendar: Secure Events

Proton AG

About this app

Proton Calendar is an easy-to-use planner and a time-management tool that keeps your schedule private

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

PRIVATE CALENDAR
✓ No ads, no trackers, and no data sharing with any third parties
✓ We can’t spy on your activities or misuse your data
✓ End-to-end encryption — fully encrypted data exchange between Proton Calendar users
✓ Zero-access encryption — event names, descriptions, and participants 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 profits
✓ Funded by users, not advertisers — privacy is our business model
✓ Built by scientists and engineers who met at CERN and MIT and founded Proton Mail
✓ Used by high-profile journalists and organizations globally
✓ GDPR and HIPAA compliant
✓ Based in Switzerland and protected by some of the world’s strongest privacy laws

What others say about Proton Calendar
“Proton Mail has now made it stupid-easy to encrypt your schedule. Information about what you plan to do, where, and with whom, can be just as sensitive as the messages you send and receive.” Gizmodo

Ratings and reviews

I really like the design. It's easy and similar to the google calendar. What brings to the this: I wanted to get away from the google calendar. Not because of the UI but because of the limited functionality. Like iCal URLs can only be added using the web interface and then take hours to synchronize with the app. This calendar does not even support to add iCal urls at all ... But every service is providing me with such e.g. University and even the local garbage pickup service. Uninstalled ...

As a calendar, it's usable and has basic features. Reminders are good and basic functionality is working. Something to improve would be, as many people mentioned week view, because it would be by far the most usable view option and color coded events. So Having the option of different colors for different event categories like important and non important.

Email reminders are completely useless on the smartphone app since the just show that you received "a reminder", but they don't contain any info about the event itself (except a link that you can click which guides you to the calendar app again). But I do love Proton and all the associated apps. Great job!

What's new

- The calendars grouping in the sidebar and settings have been updated into the following two sections:
◦ My calendar: contains all the personal calendars you own.
◦ Other calendars: contains your subscribed calendars and the calendars shared with you.
- You can now delete your subscribed calendars and leave your shared calendars from the app.