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

I love what Proton stands for. I've had great experience with their other services. However, the calendar app is not reliable. Events are not reliably syncing from the web app on my PC to the android app. Thus, I'm not receiving notifications and I'm missing important events. I've spoken with support, which was fast and thorough, but none of their suggestions has been able to fix the issue at hand. I hope they get this fixed soon; I want to use this product.

my proton calendar disappeared after only maybe 2 weeks of use. this is one of my worst nightmares. i have terrible memory which is why i rely on calendars. there was a day where it flickered and i couldn't see one of the calendars, but I wouldn't be able to tell you which calendar. i really wanted a calendar app that could replace google fit better privacy... it looks like i didn't delete the calendar by accident either. i had to un/re-install.

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!