- Encryption: Protect event details with Proton’s privacy architecture.
- Calendar sharing: Share calendars and events with other users.
- Proton ecosystem: Paid access can be bundled with Proton Mail, Drive, VPN and Pass.
- Web and mobile: Use Proton Calendar across supported web and mobile clients.
- Privacy focus: Designed for users prioritizing control over event data.
Proton Calendar
End-to-end encrypted calendar built for privacy-first scheduling
Updated August 4, 2026
Proton Calendar Overview
Proton Calendar is a privacy-focused calendar from Proton. Event data is protected with Proton’s encryption model, while the current paid price is exposed through Proton’s broader subscription bundles rather than a calendar-only plan.
Key Features
Pricing
| Plan | Price | Featured |
|---|---|---|
| Free | $0 | Encrypted calendar with core Proton Calendar access |
| Proton Unlimited | $9.99/month billed yearly | Calendar bundled with Proton Mail, Drive, VPN and Pass; paid bundle pricing, not a calendar-only price |
Proton’s current public bundle page is the source for the paid anchor; the directory does not retain the discontinued Duo row.
Pricing source: https://proton.me/pricing
Pros
| Competitor | Comparison |
|---|---|
| Google Calendar | Proton prioritizes privacy and encryption over Google’s broad integrations. |
| Apple Calendar | The Proton ecosystem gives privacy-focused users a coherent alternative. |
| Tuta Calendar | Proton’s bundle provides calendar alongside other privacy services. |
Cons
| Competitor | Comparison |
|---|---|
| Google Calendar | Proton has fewer third-party integrations and collaboration conveniences. |
| Apple Calendar | The paid price is bundled with Proton services rather than sold as a calendar-only tier. |
| Tuta Calendar | Users may miss offline, resource-booking or enterprise calendar capabilities. |
Reviews
- Reddit r/ProtonMail: A commenter called Proton Calendar “Bare-bone” and criticized offline and to-do limitations; the quote is retained as a user opinion, not a product fact.
- Apple App Store: The listing confirms the iOS product identity; no current app-store aggregate is inferred here.
