Proton Calendar AlternativesCalendar Apps like Proton Calendar

Proton Calendar is described as 'Your calendar is a record of your life. Proton Calendar helps keep it private' and is a popular Calendar app in the office & productivity category. There are more than 25 alternatives to Proton Calendar for a variety of platforms, including Web-based, iPhone, Android, iPad and Mac apps. The best Proton Calendar alternative is Tuta Mail, which is both free and Open Source. Other great apps like Proton Calendar are Google Calendar, Tuta Calendar, Etar and Apple Calendar.

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Alternatives list

  1. Tuta Mail icon

    Tuta Mail

     515 likes
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    Offers comprehensive encryption for email, calendar, and contacts with zero personal info required. Built on open source, install via Play Store, F-Droid, or APK, with Tor and VPN support. Both free and paid plans; utilizes quantum-resistant encryption ensuring privacy-focused, anonymous usage.

    100 Tuta Mail alternatives

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Flathub
    • F-Droid
    Tuta Mail screenshot 1
     
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    1
    Comments about Tuta Mail as an Alternative to Proton Calendar
    Nathan
    Positive
    0

    I like tuta and use their email service. It's updated constantly, open source, and isn't any more complicated than it needs to be while still remaining feature complete. I am not able to share my calendar(s) with anyone via an iCal link.

    Review by a new / low-activity user.
    Proton Calendar Icon
    Tuta Mail icon

    • Tuta Mail is the most popular Web-based, Windows, Android & Mac alternative to Proton Calendar.

    • Tuta Mail is the most popular Open Source & free alternative to Proton Calendar.

    • Tuta Mail is Freemium and Open SourceProton Calendar is Freemium and Proprietary
    • Tuta Mail is LightweightProton Calendar is not according to our users
  2. Google Calendar icon

    Google Calendar

     945 likes
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    Manage events seamlessly with syncing across devices, automatic event creation from Gmail, shareable schedules, customizable reminders, and a user-friendly interface. Features include dark mode, integration with Google services, and support for recurring events and global time zones.

    155 Google Calendar alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Sunbird
    • Google Chrome
    Google Calendar screenshot 1
     
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    1
    Comments about Google Calendar as an Alternative to Proton Calendar
    Guest
    Positive
    0

    That's because the capabilities of both apps are common. So that while you're using Google Calendar, you feel like you're using ProtonCalendar.

    Review by a new / low-activity user.
    Proton Calendar Icon
    Google Calendar icon

    • Google Calendar is the most popular Android Tablet alternative to Proton Calendar.

    • Google Calendar is Free and ProprietaryProton Calendar is Freemium and Proprietary
  4. Tuta Calendar icon

    Tuta Calendar

     35 likes
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    Tuta Calendar offers secure event organization with end-to-end encryption and no ads or tracking. Enjoy multi-device sync, multiple calendar views, and offline access. Fully compliant with strict German data protection laws. Manage recurring events, unlimited calendars, and seamlessly integrate with Tuta Mail.

    31 Tuta Calendar alternatives

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • F-Droid
    Tuta Calendar screenshot 1
     
  5. Ad
    Screenshot
    Notion Calendar icon
    Notion Calendar

    Experience a fully integrated calendar with Notion, syncing events from Google Calendar, offering built-in scheduling, time zone support, and the ability to connect multiple accounts. Manage all events, personal and work, with a ...

    https://www.notion.so
    Learn More
  6. Etar icon

    Etar

     83 likes
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    Material design open source calendar for Android.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Etar screenshot 1
     
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    1
    Comments about Etar as an Alternative to Proton Calendar
    Guest
    Negative
    0

    Etar is great and I use it a lot. But it's too different from ProtonCalendar for 2 reasons:

    • It does not support data encryption.
    • It does not allow to connect to ProtonCalendar online services.
    Review by a new / low-activity user.
    Proton Calendar Icon
    Etar icon
    • Etar is Free and Open SourceProton Calendar is Freemium and Proprietary
    • Etar is LightweightProton Calendar is not according to our users
  7. Apple Calendar icon

    Apple Calendar

     144 likes
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    Keep track of your busy schedule and share it with others using Calendar. Create separate calendars — one for home, another for school, a third for work, and so on. See all your calendars in a single window or choose to see only the calendars you want.

    99 Apple Calendar alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Mac
    • iPhone
    • iPad
    • iCloud
    Apple Calendar screenshot 1
     
  8. Nextcloud Calendar icon

    Nextcloud Calendar

     28 likes
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    Calendar interface for CalDAV enabling cross-device event sync, web-based editing, recurring events, Nextcloud Contacts integration, WebCal subscriptions, attendee invites, color coding, event notifications, privacy-focused hosting, and import/export support.

    31 Nextcloud Calendar alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    • Self-Hosted
    • Nextcloud
    Nextcloud Calendar screenshot 1
     

    • Nextcloud Calendar is the most popular Self-Hosted alternative to Proton Calendar.

    • Nextcloud Calendar is Free and Open SourceProton Calendar is Freemium and Proprietary
  10. Notion Calendar icon

    Notion Calendar

     14 likes
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    Experience a fully integrated calendar with Notion, syncing events from Google Calendar, offering built-in scheduling, time zone support, and the ability to connect multiple accounts. Manage all events, personal and work, with a modern design, light and dark modes, and Lock Screen support for iOS 17.

    91 Notion Calendar alternatives

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Application types

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    Notion Calendar screenshot 1
     
  11. Rainlendar icon

    Rainlendar

     118 likes
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    Rainlendar is a feature rich calendar application that is easy to use and doesn't take much space on your desktop. The application is platform independent so you can run it on all major operating systems: Windows, Linux and Mac OS X.

    76 Rainlendar alternatives

    Cost / License

    • Freemium (Pay once)
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Events and Tasks
     
  12. OurCal icon

    OurCal

     5 likes
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    This app is tailored for families, couples, friends, and groups, providing end-to-end encryption for secure data, seamless calendar creation, syncing, private chats, and widgets for easy access, ensuring you never miss an event.

    Cost / License

    • Freemium (Subscription)
    • Proprietary

    Application type

    Platforms

    • Android
    • iPhone
    OurCal screenshot 1
    OurCal screenshot 2
    OurCal screenshot 3
     
  13. fruux icon

    fruux

     36 likes
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    fruux is a free service that takes care of your contacts, calendars and more so you don't have to. Never manually copy contacts and calenders between your devices again!

    57 fruux alternatives

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Blackberry
    • Windows Phone
    • iPad
    • Blackberry 10
    • Sailfish OS
    • Software as a Service (SaaS)
    fruux screenshot 1
     

    • fruux is the most popular SaaS alternative to Proton Calendar.

    • fruux is Freemium and Open SourceProton Calendar is Freemium and Proprietary
  14. Merkuro Calendar icon

    Merkuro Calendar

     11 likes
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    Merkuro is a calendar and contact application that allows you to manage your tasks, events and contacts. Merkuro supports both local calendars as well as a multitude of online calendars: Nextcloud, Google® Calendar, Outlook®, Caldav, and many more.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Linux
    Merkuro Calendar screenshot 1
     
  15. Amie icon

    Amie

     11 likes
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    Amie is a productivity application that facilitates task, event, and contact management, integrating a scheduling feature for task and event time allocation, and effectively transforming the calendar into a todo list, with color-coding for improved organization and visual...

    Cost / License

    • Paid
    • Proprietary

    Application types

    Platforms

    • Mac
    • Online
    • iPhone
    Amie screenshot 1
     

    • Amie is the most popular commercial alternative to Proton Calendar.

    • Amie is Paid and ProprietaryProton Calendar is Freemium and Proprietary
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