Proton Calendar: Secure Events & Privacy-Focused Productivity

Proton Calendar: Secure Events is a privacy-focused calendar app designed for people who value security and confidentiality in their daily lives. Developed by Proton AG, the same team behind Proton Mail and Proton VPN, this app ensures that your events, schedules, and reminders remain fully protected with end-to-end encryption.

Unlike traditional calendar apps, Proton Calendar does not track or share your personal data. Every event you create—including its title, description, location, and participants—is encrypted, making it invisible to third parties, including Proton itself. This makes it one of the most secure calendar solutions available today.

The app provides all the essential features you expect from a modern calendar, including event scheduling, recurring reminders, daily/monthly views, color-coded categories, and cross-device sync. It also integrates seamlessly with Proton Mail, allowing you to manage emails and events in one ecosystem.

With Proton Calendar, you can easily plan meetings, set deadlines, or organize personal activities, all while knowing your privacy is guaranteed. The app supports offline access, meaning you can view and edit events even without an internet connection.

For professionals and individuals who want to balance productivity with security, Proton Calendar is an ideal solution. Whether you’re managing work projects, personal appointments, or academic schedules, this app ensures that your information stays safe and private.

With a growing global user base and more than 1 million downloads, Proton Calendar is quickly becoming the go-to choice for people who want both productivity and privacy.