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Proton Calendar

Proton Calendar

By Proton AG

4.4 Play Store (6,905 Votes)
3.9 App Store (1,162 Votes)
17
3/25/26
Freeware

Take control of your schedule with Proton Calendar—a secure, encrypted planner that protects your events and keeps your time management completely private. For Android, iOS, and as an online service.

About Proton Calendar

Proton Calendar is a privacy-first scheduling application, allowing users to maintain their planning while maintaining ownership over their information. The Proton ecosystem hosts Proton Calendar as one of its components that maintains military-grade end-to-end encryption throughout the whole platform while delivering Proton Drive and Proton Mail services. 

All entries within your schedule and every written note and created event receive encryption from end to end. The contents within your calendar remain confidential because even Proton lacks visibility into them. The basis of this application relies on encryption.

The core functions of Proton Calendar operate identically to the standards of typical calendar solutions. Users can generate occasions, establish reminders, control various calendars, along with enabling guest invitations through the platform. The user interface presents a simple design that requires no adaptation period. 

The tool functions silently to track your schedule while protecting your personal information from advertising companies and surveillance agencies. Proton Calendar presents an opportunity for anyone who wants to divorce themselves from trusts in scheduling applications while gaining control over their information sharing. This service offers life-management solutions exclusively for you without anybody observing your activities.

Why Should I Download Proton Calendar?

Proton Calendar operates as one of the few digital tools that grants user control without asking for any data concessions. When scheduling private appointments or medical sessions, or family holidays through your device, you would likely stop to think about who can view your entries. The usage of most calendar programs results in this type of question. Digital calendar tools, such as many calendar platforms, show your events as readable text through their databases, thus making your data vulnerable to internal access by corporate entities and outsiders. Proton Calendar flips that script.

Each entry in Proton Calendar uses encryption to maintain complete user ownership of their data. Your data remains undetectable by anyone except yourself, along with those persons you explicitly want to share it with, while it passes through secure channels. The experience of peace of mind related to event scheduling may not happen every time you set a new event, but it gradually develops trust. Your calendar serves as an authentic part of your personal life, since algorithms are unable to view your data.

Security represents only one element of what Proton Calendar provides. Proton Calendar works well. The basic features of Proton Calendar provide multiple calendar functionality along with color-coded event displays and notification settings throughout different calendar sections, which cover various life aspects. 

Proton Calendar serves all your planning requirements, including work operations alongside personal needs and fitness goals, and educational plans, without making anything appear complicated. The platform shows an uncluttered design that enables easy navigation through its pages. Users experience no stress when interacting with this calendar application, which stands out among calendars designed to boost work efficiency.

Proton Suite compatibility stands as one of the primary motivations for users to install the software. The Proton Mail users will experience a straightforward interconnection between their current Proton Mail system and the calendar platform. The scheduling system accepts events through emails while granting direct contact invitations within a single privacy-focused platform. It simplifies things. The tool provides users with their own secure corner of the internet, which avoids using multiple programs with separate privacy policies and permissions, along with advertisements.

Novice users can start their Proton journey through the use of the Proton calendar feature. Users can create practical time schedules through this platform, which appears to be their own-organized system. No surprises. The legal terms do not hide themselves inside hidden pages. The system provides an efficient approach to time management, which ensures privacy and simplicity for users to maintain.

Is Proton Calendar Free?

The usage of Proton Calendar requires no cost for users. The core features of the service enable users to create encrypted schedule events while utilizing synchronized reminders across multiple devices. The free Proton plan includes sufficient features that cover most users' needs, yet advanced abilities require an upgrade to the paid Proton plan.

Proton also offers paid versions of its tools. The full offer includes Proton Unlimited, which also offers Proton Mail, Proton Calendar, Proton VPN, Proton Drive, along Proton Wallet.

What Operating Systems Are Compatible with Proton Calendar?

Users get access to Proton Calendar through a variety of devices in addition to multiple platforms. The platform functions through any contemporary browser that operates on Windows, macOS, and Linux platforms while supplying mobile apps for Android along iOS. All Proton account-connected apps maintain consistent synchronization of your events so they remain current across multiple platforms. The mobile platform provides users with features like touch gesture capabilities as well as selectable dark interface modes. The application functions equally well irrespective of working at your office desktop or planning while moving with mobile devices.

What Are the Alternatives to Proton Calendar?

The main priorities of Proton Calendar revolve around privacy alongside simplicity, but users who want other capabilities can find them in different calendar applications.

Google Calendar stands among the most popular options because it integrates seamlessly with Android phones as well as services including Gmail, Meet, and Tasks. The tool serves users who need a unified network between different devices because it provides effective connectivity. The convenient access that comes from using this service results in compromises to your privacy rights. The data in your Google Calendar remains accessible to the company, which uses that information to customize your advertisements across its platforms.

People who prioritize task organization can benefit from Any.do because it offers scheduling through a task-based framework. The application integrates scheduling tools with to-do items and scheduling alerts, as well as goal management capabilities. This platform works best for users who require tools to turn events into actual steps for completion. Users can access a contemporary event planner with mobile compatibility that provides daily planning tools alongside habit monitoring features through this application interface. On the other hand, the free version of the software comes with severe limitations, since numerous essential features are only accessible through the premium service. The program maintains limited security properties compared to Proton, so it provides productive features without the same encryption capabilities.

TimeTree exists to provide a platform designed for teamwork and collaboration. The shared calendar application functions perfectly for households or work groups who want to stay connected to their schedules. Users can easily transfer events through TimeTree while adding real-time comments to enhance their planning coordination. The social design of TimeTree differs from Proton Calendar, although it functions as a different productivity tool. The shared event planning features at TimeTree benefit users who want group visibility and planning capabilities above private data protection features. The storage system on this platform lacks encryption, therefore, users should handle valuable data with care.

Proton Calendar

Proton Calendar

Freeware
17

Specifications

Play Store
4.4 (6,905 Votes)
App Store
3.9 (1,162 Votes)
Last update March 25, 2026
License Freeware
Downloads 17 (last 30 days)
Author Proton AG
Categories Office, Productivity
OS Android, Android, iOS iPhone / iPad, Web App

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