Proton Calendar

proton.me/calendar
Proton Calendar

The calendar app from the Proton suite. End-to-end encrypted. Supports ICS (not encrypted), colours, recurring events, mail integration, notifications and multiple time zones.

Security Audited Crypto Payments Accepted Open Source

Proton Calendar Privacy Policy

Privacy Policy Summary

  • The service provides two factor authentification for your account
  • Users agree to comply with the law of the service's country
  • The court of law governing the terms is in a jurisdiction that is friendlier to user privacy protection.
  • This service provides an onion site accessible over Tor
  • Terms may be changed any time at their discretion, without notice to you
  • This service tracks which web page referred you to it
  • Any liability on behalf of the service is only limited to the fees you paid as a user
  • Instead of asking directly, this Service will assume your consent to changes of terms merely from your usage.
  • This service is only available to users over a certain age
  • Pseudonyms are allowed
  • You can opt out of promotional communications
  • Your IP address is collected, which can be used to view your approximate location
  • Your account can be suspended for several reasons
  • Third parties are involved in operating the service
  • The service is not responsible for linked or (clearly) quoted content from third-party content providers
  • This service assumes no responsibility and liability for the contents of links to other websites
  • You are prohibited from sending chain letters, junk mail, spam or any unsolicited messages
  • You can access most of the pages on the service's website without revealing any personal information
  • The service informs you that its privacy policy does not apply to third party websites
  • The service has a no refund policy
  • You agree not to use the service for illegal purposes
  • You agree not to submit libelous, harassing or threatening content
  • You are prohibited from attempting to gain unauthorized access to other computer systems
  • The service provider makes no warranty regarding uninterrupted, timely, secure or error-free service
  • The service does not guarantee accuracy or reliability of the information provided
  • Invalidity of any portion of the Terms of Service does not entail invalidity of its remainder
  • Failure to enforce any provision of the Terms of Service does not constitute a waiver of such provision
  • Information is provided about security practices
  • Your personal data may be disclosed to comply with government requests without notice to you
  • Information is provided about how your personal data is used
  • The service claims to be GDPR compliant for European users
  • The court of law governing the terms is in Switzerland
  • You are forced into binding arbitration in case of disputes

Score

C

Documents

Domains Covered by Policy

  • protonmail.com
  • protonmail.ch
  • getproton.me
  • pm.me
  • protonmailrmez3lotccipshtkleegetolb73fuirgj7r4o4vfu7ozyd.onion
  • proton.me
  • protonapps.com

About the Data

This data is kindly provided by tosdr.org. Read full report at: #491

Proton Calendar Source Code

Author

ProtonMail

Description

Homepage

License

GPL-3.0

Created

28 Aug 25

Last Updated

10 Jul 26

Primary Language

Kotlin

Size

157,914 KB

Stars

31

Forks

8

Watchers

31

Language Usage

Language Usage

Star History

Star History

Top Contributors

Recent Commits

Proton Calendar Website

Website

Proton Pass: Free password manager with identity protection | Proton

Store, share and sync passwords, passkeys, email aliases, and more, on any device, with our open-source, free password manager. No trials, just free forever.

Redirects

Does not redirect

Security Checks

1 security checks failed (64 passed)

  • Robots Noindex

Server Details

  • IP Address 185.70.42.45
  • Hostname 185-70-42-45.protonmail.ch
  • Location Lausanne, Vaud, Switzerland, EU
  • ISP Proton AG
  • ASN AS62371

Associated Countries

  • DE DE
  • US US
  • CH CH

Safety Score

Website marked as moderately safe

90%

Blacklist Check

proton.me was found on 0 blacklists

  • AntiSocial Blacklist
  • Artists Against 419
  • Badbitcoin
  • Bambenek Consulting
  • CERT Polska
  • CoinBlockerLists
  • CRDF
  • CryptoScamDB
  • EtherAddressLookup
  • EtherScamDB
  • Fake Website Buster
  • MetaMask EthPhishing
  • NABP Not Recommended Sites
  • OpenPhish
  • PetScams
  • PhishFeed
  • PhishFort
  • Phishing.Database
  • PhishStats
  • PhishTank
  • Phishunt
  • RPiList Not Serious
  • Scam.Directory
  • SecureReload Phishing List
  • Spam404
  • StopGunScams
  • Suspicious Hosting IP
  • ThreatFox
  • ThreatLog
  • TweetFeed
  • URLhaus
  • ViriBack C2 Tracker

Website Preview

Website preview

Proton Calendar Android App

APK Info

De-Googled Compatibility

Native 4.00 / 4 25 ratings
microG 4.00 / 4 22 ratings
  • GrapheneOS Native 4.0 / 4 (21)
  • CalyxOS microG 4.0 / 4 (10)
  • Stock (Volla Volla Phone Quintus) microG 4.0 / 4 (4)
  • e OS microG 4.0 / 4 (4)
  • LineageOS microG 4.0 / 4 (3)
  • LineageOS Native 4.0 / 4 (2)

Tested on Android 13–16 · Updated 04 Jun 26 · View on Plexus →

Trackers

  • Sentry

Permissions

  • Access Network State
  • Foreground Service
  • Internet
  • Post Notifications
  • Read Contacts
  • Receive Boot Completed
  • Schedule Exact Alarm
  • Use Exact Alarm
  • Wake Lock
  • Billing
  • Dynamic Receiver Not Exported Permission

Proton Calendar iOS App

App Info

Proton Calendar: Secure Events

A calendar is a record of your life: Proton Calendar helps keep it private. Make the most of your time - See your upcoming events as you like with agenda or day view - View and reply to invites - Events and invites are automatically added to your calendar from your Proton Mail inbox - View your schedule in light or dark mode - Add multiple reminders for your events - Create recurring events on a daily, weekly, monthly, yearly, or custom basis - Keep your calendar in sync across all your devices Private by default - No ads, no trackers, and no data harvesting - We can’t spy on your calendar or misuse your data - Protected by the same end-to-end encryption used in Proton Mail - Event names, descriptions, and participants are stored with zero-access encryption - Based in Switzerland, all your data is protected by strict Swiss privacy laws People before 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 What others say about Proton: “Proton 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 Follow Proton on social media for all the latest news and offers: Facebook: /proton Twitter/X: @protonprivacy Reddit: /protonmail Instagram: /protonprivacy EULA: http://www.apple.com/legal/itunes/appstore/dev/stdeula

Rating

Rated 3.97 out of 5 stars by 1,268 users

Version Info

  • Current Version 2.25.1
  • Last Updated 03 Jun 26
  • First Released 30 Nov 22
  • Minimum iOS Version 16.0
  • Device Models Supported 127

App Details

  • IPA Size 184.99 Mb
  • Price Free (USD)
  • Age Advisory 4+
  • Supported Languages 26
  • Developer Proton AG
  • Bundle ID ch.protonmail.calendar

Screenshots

  • App screenshot
  • App screenshot
  • App screenshot
  • App screenshot
  • App screenshot
  • App screenshot

Proton Calendar Reviews

More Calendar

About the Data: Proton Calendar

Change History

API

You can access Proton Calendar's data programmatically via our API. Simply make a GET request to:

https://api.awesome-privacy.xyz/v1/services/proton-calendar

The REST API is free, no-auth and CORS-enabled. To learn more, view the API Docs or read the API Usage Guide.

Share Proton Calendar

Help your friends compare Calendar, and pick privacy-respecting software and services.
Share Proton Calendar and Awesome Privacy with your network!

View Calendar (3)