Proton Calendar: Secure Events

Proton Calendar: Secure Events

Keep your schedule private

1.3K ratings
557 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • November 30, 2022
  • June 3, 2026
Proton Calendar: Secure Events screenshot #1 for iPhone
Proton Calendar: Secure Events screenshot #2 for iPhone
Proton Calendar: Secure Events screenshot #3 for iPhone
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Proton Calendar: Secure Events screenshot #5 for iPhone
Proton Calendar: Secure Events screenshot #6 for iPhone
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About

This app helps you manage your schedule with privacy in mind. It offers various viewing options, reminders, and recurring event creation. All your data is protected by end-to-end encryption and strict Swiss privacy laws, ensuring your personal information is not tracked or harvested.

Agenda and day view
View and reply to invites
Automatic event addition from email
Light and dark mode
Multiple reminders
Recurring events
Cross-device sync
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What users say

See all reviews

What's New in Proton Calendar

2.25.1

June 3, 2026

Minor bug-fixes.

2

In-App Purchases

$59.99

Mail Plus (1 year)

1-year subscription to Mail Plus

User reviews

Too basic

Misses too many options available in other calendars like Outlook. Search box for example would be nice so one can search for specific scheduled meetings or appointments

Great with one but

The app is great, driving on daily bases. BUT: ability to add events to non-proton calendars is the key feature that is missing unfortunately

Minute change suggestion

This is a good app. I’d recommend adding a feature that allows users to change the minute column to increments of 5 instead of 1. That would reduce options from 60 to 12, making scheduling more efficient, and few people schedule at times outside of increments of 5.

Need watch app please

Works great on phone and iPad but missing watch app. Add watch support and I’ll change rating to 5 stars

No offline mode

the fact that this doesn’t have an offline mode is unforgivable

Developer apps

User experience

🐞

Reported Bugs

3 issues

Issues with time zone settings

Bug

Notifications not working reliably

Bug

Inability to edit shared events

Bug

Requested Features

5 requests

Widgets for quick access

Feature

Ability to invite and share calendars with others

Feature

Support for importing/exporting calendar data

Feature

Customization options (colors, alerts, etc.)

Feature

iPad-optimized version

Feature

FAQ

What does Proton Calendar do?

Proton Calendar is a privacy-focused application designed to help you manage your schedule and events. It offers features like different viewing modes, the ability to view and reply to invites, and automatic addition of events from your email inbox. It ensures your schedule remains private and secure.

How is my data protected by Proton Calendar?

Your data is protected by the same end-to-end encryption used in Proton Mail. Event names, descriptions, and participants are stored with zero-access encryption, meaning even Proton cannot access your data. The app is also based in Switzerland, adhering to strict privacy laws.

Is Proton Calendar free to use?

Yes, the application is free to use. It is funded by its users, not by advertisers, which aligns with its privacy-first business model. This means there are no ads or trackers within the app.

What devices is Proton Calendar compatible with?

The application is designed to keep your calendar in sync across all your devices. While specific operating systems are not detailed in the description, it implies cross-platform compatibility for seamless access to your schedule.

What are the main benefits of using Proton Calendar over other calendar apps?

The primary benefit is its strong emphasis on privacy and security. Unlike many other calendar apps, it offers end-to-end encryption for your event data, no ads, no trackers, and no data harvesting. It's built with a commitment to user privacy, making it ideal for those concerned about their personal information.