Proton Calendar: Secure Events

In-app purchases
4.3
2.46K reviews
100K+
Downloads
Content rating
Everyone
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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
Updated on
Apr 11, 2024

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Financial info and 5 others
Data is encrypted in transit
You can request that data be deleted

Ratings and reviews

4.3
2.35K reviews
Francisco Barcena
January 25, 2024
Runs well and I like the notifications. Could be improved when selecting a date, it'd be nice if the view scrolled to the first event of the day. Doesn't make sense for the default scroll to be zero, meaning 12am. Also how can I get more important dates like "First day of black history month"? These dates show up in Google calendar and I'm trying to switch over to Proton.
9 people found this review helpful
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Proton AG
January 25, 2024
Hi Francisco! You can learn how to add public holidays in Proton Calendar at: https://proton.me/support/public-holiday-calendars. Could you report the view behavior to us via the in-app 'Report a problem' feature so we can further investigate? The view should indeed scroll to the firs event when selecting a date with multiple events.
ManfromtheRedRiver
February 21, 2024
I like the design and layout. (It essentially copies Google with different colors.) I like the privacy. It might be a great calendar app EXCEPT that it doesn't reliably display events!!! Over about a week that I've been experimenting with this it randomly won't display certain upcoming holidays at all! This means I simply can't trust it! What if it decides to just not show an important event that I enter in to it???! Reliability must be #1 even before security for something like this.
3 people found this review helpful
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Proton AG
February 22, 2024
Hello! We're sorry to hear about your experience with the Proton Calendar app. Does the app fail to send a notification for a certain event? Please elaborate and report these issues to us directly through the "Report a problem" feature in the app menu so we can investigate this further.
TuxBuilder
August 30, 2023
This app is great! Another successful private alternative to Google's software. The only thing that I would like is the ability to import things other than events from Google calendar, such as reminders, and the ability to create reminders in the app similarly to Google's calendar app. All in all, it's a n excellent calendar app. It displays events really well. I'd just like the ability to add reminders which can be crossed off upon completion.
26 people found this review helpful
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Proton AG
September 3, 2023
Thank you for sharing your feedback with us! We've passed it along to the team, so it can be taken into future consideration. Implementing tasks and to-do lists to Proton Calendar is on our roadmap: https://proton.me/blog/proton-mail-calendar-roadmap.