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 Notion Calendar.

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

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Proton Calendar alternatives page was last updated Jan 14, 2025
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Alternatives
  1. Tuta Mail icon

    Tuta Mail

     476 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.

    97 Tuta Mail alternatives

    License model

    • Freemium • Open Source

    Application types

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Flathub
    • F-Droid
    Mail View

    Properties

    1.  Privacy focused
    2.  Lightweight
    3.  Clean design

    Features

    1.  Encrypted Email
    2.  End-to-End Encryption
    3.  Dark Mode
    4.  Custom Domain
    5.  Encrypted calendar
    6.  Contacts
    7.  No Tracking
    8.  Multiple Account support
    9.  Integrated File Sharing
    10.  Ad-free
    11.  Spam Filter
    12.  Email Organizer

    Tuta Mail VS Proton Calendar

     
    Comments about Tuta Mail as an Alternative to Proton Calendar
    Nathan
    Positive •Jul 14, 2024
    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.

    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 Privacy focused and LightweightProton Calendar is not according to our users
  2. Google Calendar icon

    Google Calendar

     936 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.

    149 Google Calendar alternatives

    License model

    • Free • Proprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Online
    • Android
    • iPhone
    • Chrome OS
    • Android Tablet
    • iPad
    • Sunbird
    • Google Chrome
    Google Calendar screenshot 1

    Google Calendar Features

    1.  Reminder for deadlines
    2.  Material design
    3.  Data export/import
    4.  Shared Calendar
    5.  Cloud Sync
    6. IFTTT icon  IFTTT Integration
    7.  Calendar Integration
    8.  Calendar View
    9.  Dark Mode
    10.  Passkey Support

    Google Calendar VS Proton Calendar

     
    Comments about Google Calendar as an Alternative to Proton Calendar
    Guest
    Positive •Mar 24, 2022
    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.

    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

     26 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

    License model

    • Freemium • Open Source

    Application type

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • F-Droid
    Tuta Calendar screenshot 1

    Properties

    1.  Privacy focused
    2.  Customizable

    Features

    1.  Ad-free
    2.  Dark Mode
    3.  Encrypted calendar
    4.  No Tracking
    5.  Calendar View
    6.  Two-factor Authentication
    7.  End-to-End Encryption
    8.  Pomodoro Timer
    9.  Auto Responder
    10.  Cloud Sync
    11.  Reminders
    12. Google Calendar icon  Sync with Google Calendar

    Tuta Calendar VS Proton Calendar

     
  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

     78 likes
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    Material design open source calendar for Android.

    50 Etar alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Etar screenshot 1

    Properties

    1.  Lightweight
    2.  Privacy focused

    Features

    1.  Material design
    2.  Ad-free
    3.  No Tracking
    4.  Works Offline
    5.  Dark Mode
    6.  Multiple Account support
    7.  GPS Location Tracking

    Etar VS Proton Calendar

     
    Comments about Etar as an Alternative to Proton Calendar
    Guest
    Negative •May 26, 2022
    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.
    Proton Calendar Icon
    Etar icon
    • Etar is Free and Open SourceProton Calendar is Freemium and Proprietary
    • Etar is Lightweight and Privacy focusedProton Calendar is not according to our users
  7. Notion Calendar icon

    Notion Calendar

     11 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.

    82 Notion Calendar alternatives

    License model

    • Freemium • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Online
    • Android
    • iPhone
    Notion Calendar screenshot 1

    Top Notion Calendar Features

    1. Google Calendar icon  Sync with Google Calendar
    2.  Dark Mode
    3.  Calendar Integration
    4.  Calendar View
    5.  Adjusts timezone automatically
    6.  Support for Keyboard Shortcuts
    7.  Shared Calendar
    8.  Lockscreen Widget
    9.  Appointment Scheduling
    10. Zoom icon  Zoom integration
    11. Notion icon  Notion Integration
    12.  Scheduling

    Notion Calendar VS Proton Calendar

     
  8. 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.

    54 OurCal alternatives

    License model

    • Freemium • Proprietary

    Application type

    Country of Origin

    • GB flagUnited Kingdom

    Platforms

    • Android
    • iPhone
    OurCal screenshot 1
    OurCal screenshot 2
    OurCal screenshot 3

    Properties

    1.  Privacy focused

    Features

    1.  No registration required
    2. Google Calendar icon  Sync with Google Calendar
    3.  No Tracking
    4.  End-to-End Encryption
    5.  Reminders
    6.  Calendar View
    7.  Ad-free
    8.  Calendar Sync
    9. Microsoft Outlook icon  Outlook integration
    10.  iOS widget
    11. Google Calendar icon  Google Calendar integration
    12.  Shared Calendar

    OurCal VS Proton Calendar

     
  10. Rainlendar icon

    Rainlendar

     116 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

    License model

    • Freemium • Proprietary

    Application type

    Country of Origin

    • FI flagFinland
    • European Union flagEU

    Platforms

    • Mac
    • Windows
    • Linux
    Events and Tasks

    Properties

    1.  Customizable

    Features

    1.  Reminders
    2.  Recurring Tasks
    3.  Ad-free
    4.  No registration required
    5. Google Calendar icon  Sync with Google Calendar
    6. Apple Calendar icon  iCal integration
    7.  Multiple languages
    8.  Sync with Fantastical

    Rainlendar VS Proton Calendar

     
  11. Nextcloud Calendar icon

    Nextcloud Calendar

     26 likes
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    The Calendar app is a user interface for Nextcloud's CalDAV server. Easily sync events from various devices with your Nextcloud and edit them online.

    32 Nextcloud Calendar alternatives

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Online
    • Self-Hosted
    Nextcloud Calendar screenshot 1

    Properties

    1.  Privacy focused

    Features

    1.  Cloud Sync
    2. Nextcloud icon  Nextcloud integration
    3.  No Tracking
    4.  Calendar View
    5.  Calendar Integration
    6.  Full-Text Search
    7.  Reminders
    8.  Dark Mode
    9.  Subtasks
    10.  Support for @mentions
    11.  Two-factor Authentication
    12.  Ad-free

    Nextcloud Calendar VS Proton Calendar

     

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

    • Nextcloud Calendar is Free and Open SourceProton Calendar is Freemium and Proprietary
    • Nextcloud Calendar is Privacy focusedProton Calendar is not according to our users
  12. Apple Calendar icon

    Apple Calendar

     141 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.

    94 Apple Calendar alternatives

    License model

    • Free • Proprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • iPhone
    • iPad
    • iCloud
    Apple Calendar screenshot 1

    Apple Calendar Features

    1.  Web-Based
    2.  Sync with iCloud
    3.  Week Planner
    4.  Scheduling

    Apple Calendar VS Proton Calendar

     
  13. HEY Calendar icon

    HEY Calendar

     2 likes
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    HEY Calendar is a digital scheduling tool designed with a unique approach to managing time and tasks. It offers a feature that allows users to rename days according to their significance, such as designating a day as 'Travel day', 'Anniversary', or 'No work...

    49 HEY Calendar alternatives

    License model

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Snapcraft
    HEY Calendar screenshot 1

    HEY Calendar Features

    1.  Calendar View
    2.  Calendar Integration
    3.  Dark Mode
    4.  Ad-free
    5.  Calendar Sync

    HEY Calendar VS Proton Calendar

     

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

    • HEY Calendar is Paid and ProprietaryProton Calendar is Freemium and Proprietary
  14. Amie icon

    Amie

     10 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...

    54 Amie alternatives

    License model

    Application types

    Platforms

    • Mac
    • Online
    • iPhone
    Amie screenshot 1

    Top Amie Features

    1.  Pomodoro Timer
    2.  Calendar View
    3.  Scheduling
    4. Google Calendar icon  Sync with Google Calendar
    5.  Calendar Integration
    6.  Multiple Account support
    7.  Real time collaboration
    8.  Widgets
    9. Spotify icon  Spotify integration
    10.  Integrated Email Client
    11. Todoist icon  Todoist integration
    12.  Drag and Drop

    Amie VS Proton Calendar

     
  15. fruux icon

    fruux

     32 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!

    53 fruux alternatives

    License model

    • Freemium • Open Source

    Application type

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

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

    fruux Features

    1.  CardDAV Support
    2.  Contacts
    3.  CalDAV Support
    4.  Sync Contacts
    5.  Calendar Sync
    6.  CalDAV Server

    fruux VS Proton Calendar

     

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

    • fruux is Freemium and Open SourceProton Calendar is Freemium and Proprietary
12 of 35 Proton Calendar alternatives