✓ Built by scientists and engineers from CERN and MIT ✓ Funded by users, not advertisers - privacy is our business model We’re community-supported, open source, and committed to transparency. ✓ Automatic sync with Proton Calendar web app and access your calendars on any browser and any device ✓ Add multiple notifications to any event ✓ Add locations and descriptions to each event ✓ Schedule appointments in both local and foreign time zones ✓ Set recurring events on a daily, weekly, monthly, yearly, or custom basis Perfect for organizing your calendars for work, family and friends. Proton Calendar is designed to help you stay better organized. ✓ Based in Switzerland - All your data is protected by Swiss privacy laws ✓ Zero-access encryption - event names, descriptions, and participants are fully encrypted and inaccessible to third parties ✓ End-to-end encryption - even we cannot view your event details ✓ No ads, no trackers, and no data sharing with any third parties Unlike other popular calendar apps, we can’t spy on your activities and misuse your data. Proton Calendar brings the same privacy protection to calendar. Tens of millions of people use ProtonVPN and ProtonMail, the world’s largest encrypted email service.

Proton Calendar syncs across devices, so you can keep track of your schedule anywhere. Proton Calendar uses end-to-end encryption to keep all your personal information private and secure so that no third party (including Proton) can see the details of your events. With Proton Calendar, you no longer share your private life with your calendar provider or other third parties - only you have access to your appointments, meetings, and events. Proton Calendar is an encrypted calendar that lets you keep your life private, away from prying eyes and tech companies that spy on you.

It’s a record of the moments that make up your life. “Where ProtonMail is really looking to differentiate itself is by putting privacy at the heart of Proton Calendar.” VentureBeatĪ calendar is more than just a tool.

Proton calendar app