Proton Calendar: Secure Events

Proton Calendar: Secure Events icon

Proton Calendar: Secure Events

Proton AG

4.4

6K ratings

500,000+

downloads

Free

+ in-app

In this calendar app, you can schedule and manage events securely with automatic sync and recurring options. Includes end-to-end encryption, privacy-focused features, and support for multiple calendars.

AppRecs review analysis

AppRecs rating 4.1. Trustworthiness 86 out of 100. Review manipulation risk 19 out of 100. Based on a review sample analyzed.

★★★★

4.1

AppRecs Rating

Ratings breakdown

5 star

71%

4 star

14%

3 star

6%

2 star

2%

1 star

7%

What to know

Low review manipulation risk

19% review manipulation risk

Credible reviews

86% trustworthiness score from analyzed reviews

Pricing complaints

Many low ratings mention paywalls or pricing

About Proton Calendar: Secure Events

Proton Calendar is an easy-to-use planner and a time-management tool that keeps your schedule private

Additional Highlights
✓ Schedule planner syncs automatically across browsers and devices
✓ Create recurring events on a daily, weekly, monthly, yearly, or custom basis
✓ Use as an appointment scheduler in local or foreign time zones
✓ Manage up to 20 calendars (paid feature)
✓ View your agenda from the home screen with the Proton Calendar widget
✓ Add multiple reminders for any event
✓ Use as a daily planner or monthly planner by switching between different views
✓ Choose to view your event schedule in dark mode or light mode

PRIVATE CALENDAR
✓ No ads, no trackers, and no data sharing with any third parties
✓ We can’t spy on your activities or misuse your data
✓ End-to-end encryption — fully encrypted data exchange between Proton Calendar users
✓ Zero-access encryption — event names, descriptions, and participants are encrypted on our servers
✓ Based in Switzerland 🇨🇭 — All your data is protected by strict Swiss privacy laws

USERS FIRST
Building an internet that puts people ahead of profits
✓ Funded by users, not advertisers — privacy is our business model
✓ Built by scientists and engineers who met at CERN and MIT and founded Proton Mail
✓ Used by high-profile journalists and organizations globally
✓ GDPR and HIPAA compliant
✓ Based in Switzerland and protected by some of the world’s strongest privacy laws

What others say about Proton Calendar
“Proton Mail has now made it stupid-easy to encrypt your schedule. Information about what you plan to do, where, and with whom, can be just as sensitive as the messages you send and receive.” Gizmodo
Proton Calendar: Secure Events Screenshots
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Tap to Rate:

Reviews for Proton Calendar: Secure Events

Josh

12/30/2025

Was using Outlook but this is a great ad-free, encrypted, LIGHTWEIGHT calendar app and now has a widget. Importing Google/Outlook calendars were a breeze. Really the only thing I miss were custom themes but I can live without.

Lmnop

12/29/2025

PLEASE PLEASE PLEASE GET A MONTHLY CALENDAR WIDGET! COME ON!!!!! I've been wanting to give you my money for YEARS to get proton unlimited, but have absolutely refused until you make a month-view widget. Like a calendar? You're a calendar app! Not a scheduler app! Why do you only have a schedule widget?! PLEASE HELP ME GIVE YOU MY MONEY

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