Proton Calendar
75 likes
Your calendar is a record of your life. Proton Calendar helps keep it private.
License model
- Freemium • Proprietary
Application type
Country of Origin
Switzerland
Platforms
- Online
- Android
- iPhone
- Android Tablet
- Tor
Features
Proton Calendar News & Activities
Highlights All activities
Recent News
- Fla published news article about Proton MailProton Mail and Calendar introduce notes for event invitations
Proton Mail and Proton Calendar now let users add notes when replying to event invitations. These n...
- Maoholguin published news article about Proton VPNProton launches cost-effective 'Proton Duo' sub tier for couples with encrypted services
Proton has introduced a new plan called "Proton Duo," specifically designed for couples. This plan ...
- Maoholguin published news article about Proton MailProtonMail launches encrypted email desktop apps in beta for Windows and Mac
Proton Mail has finally released desktop versions of its encrypted email service in beta for Window...
Recent activities
- jwb added Proton Calendar as alternative to LiveDeskCal
What is Proton Calendar?
Proton Calendar Videos
Proton Calendar information
AlternativeTo Categories
Office & Productivity, Security & Privacy, Social & CommunicationsApple AppStore
- Updated May 29, 2025
- 3.43 avg rating
GitHub repository
- 145 Stars
- 18 Forks
- 10 Open Issues
- Updated Jul 14, 2024
Comments and Reviews
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.
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...
I agree it has alot of missing features, but you can create 3 calendars using the free tier of proton mail.
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)
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.
I've since switched to Android and they have rolled out this feature! Five stars!
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?
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!
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.)
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.