Proton Calendar: Secure Events

Proton AG

In-app purchases

About this app

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

Ratings and reviews

Unfortunately this app just isn't reliable. Transfer from another provider isn't working & looses allot in the move. It also doesn't have a pin/bio lock! Why not? Is it not private information like Drive, Pass & Mail? I can open calendar, VPN, unchallenged & change/read/copy anything, even uninstall! The theme flow is perfectly aligned with PROTON & few more tweaks it will be perfect. Assuming the present UI team don't get to it first and remove all the useful functionality it's almost a 5 ⭐

I really love using Proton products, although the calendar is particularly frustrating. Theres no way to color code calendars without makibg a whole new calendar list. This would be a huge improvement because i share a calendar and it would be easier to distinguish between our activities without making several shared calendars between us as well as having several personal calendars to distinguish as well. Theres also huge limitations on the app vs desktop. I hope these features improve!

Great alternative for Google's calendar, fully encrypted for security and privacy. It has an intuitive GUI, a fantastic widget, and it's just nice to have my schedule truly private for me only. Many don't think about how important it is to have an encrypted calendar.