Proton Calendar: Secure Events

4.0
932 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
Feb 2, 2023

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
4.0
932 reviews
Diego Chagall
January 23, 2023
I wanted this to work for me, but right now, at least, it's just too constraining, with limited flexibility, so I need to go back to Outlook. Does not have a true monthly calendar -- Requires you to always work through a daily calendar in order to schedule or access an event. Assumes you'll want an emailed reminder of every event -- apparently no way to turn that off as a default, so you have to turn it off every time you schedule an event.
Did you find this helpful?
Proton AG
January 24, 2023
Hi! Please note that the app does have a monthly view, which you can select from the side menu. This way, event titles and durations will be displayed. You can also edit the default notifications for your calendars in Settings → Select the desired calendar → Edit. You can remove the email notifications for events in this menu.
Amanda Jameson
October 12, 2022
Mostly solid. Love the security. Wish I could tap and drag an event to move it, and change the color of events in the same calendar. The daily widget squishes all the text so it's unreadable. Wish there was a monthly widget. Will def keep using and hope to see these features in the future.
27 people found this review helpful
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Proton AG
October 13, 2022
Thank you for taking the time to review our app and for sharing your feedback with us. We will forward your request for these features to our developers so they can focus on future improvements. Note that we're already working on the option to choose event colors.
Daniel Sawicki
July 2, 2022
I am very surprised. The devs really knew what they were doing. The UI is super easy to use and looks really nice. It's easy to view events and is way better than the other apps I've tried. I have tried Timetree, google Calendar, some app just called calender, and one other that ii don't remember the name of. They all have difficult to manage UI and features that are there but simply don't work. I can't seem to find dark mode option though.
32 people found this review helpful
Did you find this helpful?
Proton AG
July 4, 2022
Thank you for your support, we really appreciate it! Regarding dark mode, if your device's Android version is older than version 10, then the only way to change the widget and calendar app to dark mode is through your device settings. If your device supports dark mode, then the app and widget will also default to dark mode.

What's new

- Improved widget functionality: narrow screen adjustments and reloading button.
- Extra calendar colors are now available.
- Bug fixes and stability improvements.