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Proton Calendar

Proton Calendar

Proton Calendar

FREEMIUM

Encrypted calendar for privacy-focused users.

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About

Proton Calendar is an encrypted calendar app that ensures your events and data remain private and secure.

Pricing

Pricing Type

Freemium

Free tier available

Starting Price

$4

Billing

Billed monthly

Last checked: February 22, 2026

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Key Facts

Categories

Platforms

Web

iOS

Android

Company

Proton

Founded

Founded in 2021

Country

Global

Language

English

Social Links

Quick Info

Website

calendar.proton.me