Proton Calendar icon
Proton Calendar icon

Proton Calendar

 75 likes

Your calendar is a record of your life. Proton Calendar helps keep it private.

Proton Calendar screenshot 1

License model

  • FreemiumProprietary

Application type

Country of Origin

  • CH flagSwitzerland

Platforms

  • Online
  • Android
  • iPhone
  • Android Tablet
  • Tor  [https://protonmailrmez3lotccipshtkleegetolb73fuirgj7r4o4vfu7ozyd.onion/calendar](https://protonmailrmez3lotccipshtkleegetolb73fuirgj7r4o4vfu7ozyd.onion/calendar)
4.2 / 5 Avg rating (24)
75likes
11comments

Features

Suggest and vote on features

Properties

  1.  Privacy focused

Features

  1.  End-to-End Encryption
  2.  Cloud Sync
  3.  Two-factor Authentication
  4.  Reminders
  5.  Ad-free
  6.  Dark Mode
  7.  No Tracking
  8.  Calendar Integration
  9. Google Calendar icon  Sync with Google Calendar
  10. Zoom icon  Zoom integration
  11.  Calendar View
  12.  Push Notifications
  13.  Event management
  14.  Integrated Search

Proton Calendar News & Activities

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Recent activities

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Comments and Reviews

   
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Comment summary: Proton Calendar is praised for being simple, privacy-respecting, and having a dedicated mobile app. Users appreciate its end-to-end encryption and recent updates that improved usability. However, some criticize it for missing features like multiple calendar creation, offline functionality, and lack of open-source support. Concerns are raised about privacy claims under Swiss law. The introduction of a search function enhanced user satisfaction, though feature parity across platforms is desired.
Top Positive Comment
Ada Byron
Jun 8, 2022
3

It is very very hard to make a secure calendar that is usable. Somehow with Proton's most recent update that overhauled a lot of services that were only in beta, they have done it and then some. I was not a Proton Calendar user until the recent massive updates.

Top Negative Comment
imad1maz
Mar 14, 2023
-1

I couldn't rate it less ... It's missing a lot of features. It's not even open source as mentioned ,you can't even create 2 calendars at the same time, google calendar is waaaaaay better, don't waste your time creating an account it's useless...

yanto
Dec 28, 2024

I agree it has alot of missing features, but you can create 3 calendars using the free tier of proton mail.

alternative-atonable413
Jan 10, 2025
0

I like Proton Calendar because it looks awesome, has all the features I need and sharing calendars with family members works just fine. The biggest problem is parity between platforms (e.g. search is not available on all apps and an iPad version is missing)

Mr. Anon
Nov 13, 2023
1

I would do five stars if the iOS version would allow you to view most of your daily events in the monthly view and invite others after an event has been created (both just like Google Calendar).

Otherwise, exactly what I need.

Mr. Anon
Feb 20, 2025

I've since switched to Android and they have rolled out this feature! Five stars!

Duncan Briggs
Nov 1, 2023
1

According to AlternativeTo, Proton Calendar does not have a standalone app for macOS. I could use the web version from my computer. But can I view my calendar when offline? And when my web browser is closed, do I still get notifications of upcoming events?

Andrey Kolmogorov
Oct 23, 2023
1

Finally, the Proton calendar got a search function! I still used it before, but without a search function, it feels incomplete. Now it doesn't! Therefore: 5 stars!

Guest
Aug 4, 2023
-2

Not privacy-friendly! Requires an online account! Those two things are mutually exclusive! And Swiss law requires them to leak your data to the Swiss spying agency and any befriended spying agencies (like Five Eyes, Mossad, …)! I’m a security researcher, and Swiss software is just as critical as US, Russian, Israeli, Iranian, Saudi, or Chinese software. (Because the businesses there got no choice. Not because any businesses there would be evil. But if they claim privacy-friendliness anyway, they are evil.)

Mr. Anon
Nov 13, 2023

You can't prove they are "evil." I believe Proton is an incredible company trying its best to be the best privacy-respecting company it can be.

Every individual is responsible for their own threat model, and many people (like myself) prefer an online calendar for sync convenience across all devices. If you want an offline calendar, so be it, but don't put down this calendar just because it is online. Your comment/review can be applied across any online calendar. Thanks.

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7 of 11 comments

What is Proton Calendar?

Your schedule is worth protecting Your calendar is a record of your life. Proton Calendar helps keep it private.

Make every day safer with end-to-end encryption Proton Calendar automatically secures all your events with end-to-end encryption. Events received from people who use other calendars are secured with zero-knowledge encryption. In both cases, event details, including the title, description, location, and people invited, are encrypted so not even we can see them.

All the features you expect, plus privacy Proton Calendar makes staying on top of your schedule simple while keeping your information secure.

Free calendar Everyone has the right to privacy, which is why we make Proton Calendar available for free. To access more features and support our fight for a better internet, upgrade to a paid account.

Your data, your rules Proton Calendar is a calendar that respects privacy and puts people (not advertisers) first. Your data belongs to you, and our encryption ensures that.

Swiss privacy Proton is incorporated and headquartered in Switzerland. This means all user data is protected by strict Swiss privacy laws and Swiss neutrality.

Proton Calendar was built by the team behind Proton Mail, the world’s largest encrypted email service Over 50 million people and some of the world’s largest organizations have signed up with Proton.

Get more from Proton Calendar when you use Proton Mail Proton Calendar comes with a Proton Mail email address that you can use to securely send event invites. You can also add events to Proton Calendar directly from your Proton Mail inbox.

Proton Calendar helps you make the most of your day With Proton Calendar, you can quickly add events, modify invitations, and set multiple reminders, meaning you can spend less time managing your schedule and more time on the things that matter. Import your existing calendar to Proton Calendar with only a couple of clicks to get started.

Proton Calendar Videos

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Official Links

Proton Calendar information

  • Developed by

    CH flagProton
  • Licensing

    Proprietary (GPL-3.0) and Freemium product.
  • Pricing

    Subscription ranging between $4 and $13 per month + free version with limited functionality.
  • Written in

  • Rating

    Average rating of 4.2 (24 ratings)
  • Alternatives

    35 alternatives listed
  • News

    10 news article related to Proton Calendar
  • Supported Languages

    • English
    • German
    • French
    • Spanish
    • Italian
    • Dutch
    • Polish
    • Portuguese
    • Russian
    • Turkish
    • Belarusian
    • Catalan; Valencian
    • Czech
    • Danish
    • Greek
    • Finnish
    • Korean
    • Japanese
    • Croatian
    • Hungarian
    • Indonesian
    • Romanian
    • Swedish
    • Ukrainian
    • Chinese
    • Norwegian Bokmål
    • Slovene
    • Hindi
    • Georgian

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Apple AppStore

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GitHub repository

  •  145 Stars
  •  18 Forks
  •  10 Open Issues
  •   Updated Jul 14, 2024 

Our users have written 11 comments and reviews about Proton Calendar, and it has gotten 75 likes

Proton Calendar was added to AlternativeTo by Ian Dorfman on Dec 31, 2019 and this page was last updated Jul 19, 2024.