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Best Proton Calendar Apps

213+ iOS apps curated and reviewed

4.4 avg rating
20 free apps
Updated May 2026

From beginner-friendly picks to power-user tools, our proton calendar list covers 213+ iPhone apps updated through May 2026. Compare ratings, prices, and screenshots in one place.

Top Picks for Proton Calendar

Proton Calendar: Secure Events#1

Proton Calendar: Secure Events by Proton AG

Keep your schedule private
Editor's Choice
📊 Productivity
4.0😐(1.3K ratings)
FreeIn-App Purchases
Proton Calendar: Secure Events screenshot 1
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Proton Calendar: Secure Events screenshot 4
Proton Calendar: Secure Events screenshot 5
Proton Calendar: Secure Events screenshot 6

This app helps you manage your schedule with privacy in mind. It offers various viewing options, reminders, and recurring event creation. All your data is protected by end-to-end encryption and strict Swiss privacy laws, ensuring your personal information is not tracked or harvested.

What We Love

  • 🚀 Intuitive interface
  • 🔒 Secure and private
  • 👍 Good integration with Proton suite
  • 👍 Visually appealing design

Room to Improve

  • 🐛 Slow performance and crashes
  • 🔍 Lacking search functionality
  • 📅 Missing advanced calendar views (week, month)
Proton Drive: Cloud Storage#2

Proton Drive: Cloud Storage by Proton AG

Private files & photos backup
Strong Contender
📊 Productivity
4.1😐(965 ratings)
FreeIn-App Purchases
Proton Drive: Cloud Storage screenshot 1
Proton Drive: Cloud Storage screenshot 2
Proton Drive: Cloud Storage screenshot 3
Proton Drive: Cloud Storage screenshot 4
Proton Drive: Cloud Storage screenshot 5
Proton Drive: Cloud Storage screenshot 6

Securely store and back up your files and photos with end-to-end encryption. Access your content across devices, share securely with password protection, and enjoy peace of mind with Swiss privacy laws. Offers free storage with upgrade options.

What We Love

  • 🚀 Fast and efficient
  • 🔒 Secure and private
  • 👍 Simple and intuitive UI
  • 💡 Integrated with iOS Files app

Room to Improve

  • 🐛 Buggy and unreliable
  • 🔋 High battery consumption
  • 📥 Slow upload/download speeds
Proton Pass - Password Manager#3

Proton Pass - Password Manager by Proton AG

Secure end-to-end encryption
Worth Considering
📊 Productivity
4.7😐(1.2K ratings)
FreeIn-App Purchases
Proton Pass - Password Manager screenshot 1
Proton Pass - Password Manager screenshot 2
Proton Pass - Password Manager screenshot 3
Proton Pass - Password Manager screenshot 4
Proton Pass - Password Manager screenshot 5
Proton Pass - Password Manager screenshot 6

Securely manage your online credentials with end-to-end encryption. This free password manager offers autofill, 2FA code generation, email alias creation, and data breach monitoring across all your devices. Protect your digital identity with robust Swiss privacy laws.

What We Love

  • 🚀 Decent password manager
  • 🔒 Secure and encrypted
  • 👍 Integrated email alias feature
  • 👍 Competitive pricing

Room to Improve

  • 🐛 Autofill issues
  • 🐛 Logging out issues
  • 🐛 Buggy and unreliable

More Proton Calendar apps to explore

4
Proton Mail - Encrypted Email
Proton Mail - Encrypted Email
Proton Mail - Encrypted Email
Fast, private & secure mail
Free

This encrypted email service from Switzerland prioritizes user privacy with end-to-end encryption. It offers robust security features to protect your communications from phishing, spam, and tracking, allowing you to manage your inbox with ease.

End-to-end encryptionPassword-protected emailsMultiple account support
📊 Productivity
(44K)
free with in-app purchases
5
Proton VPN: Fast & Secure
Proton VPN: Fast & Secure
Proton VPN: Fast & Secure
Safe and unlimited proxy
Free

This app provides a secure, encrypted, and unlimited internet connection, protecting your privacy and unblocking content. It offers advanced security features and a strict no-logs policy, with both free and premium options available.

Unlimited data, no speed restrictionsStrict no-logs policyBypass geo restrictions
🔧 Utilities
(49K)
freemium
6
Proton Wallet: Secure Bitcoin
Proton Wallet: Secure Bitcoin
Proton Wallet: Secure Bitcoin
A safer way to hold Bitcoin
Free

This app provides a secure and user-friendly way to manage Bitcoin, giving users full control over their funds. It offers features like multi-device support, encrypted transactions, and a unique email-based sending option for enhanced privacy and ease of use.

Sole control of BTCIntuitive experience for newcomersSeamless multi-device support
💰 Finance
(213)
free
7
Tuta: Secure Private Calendar
Tuta: Secure Private Calendar
Tuta: Secure Private Calendar
Planner, Reminders & Events
Free

This secure calendar app offers end-to-end encryption to protect your events and reminders. It features a user-friendly interface, cross-device syncing, and smart reminders, with a free plan and optional premium upgrades.

Quantum-safe end-to-end encryptionZero tracking and zero-knowledge architectureSecure event sharing
📊 Productivity
(142)
freemium
8
Notion Calendar
Notion Calendar
Notion Calendar
For your work and life
Free

Manage your schedule and events with a unified view across multiple calendars. Integrate with your Notion workspace to link documents and projects directly to your events. Offers customizable widgets for quick access to upcoming appointments and event details.

Deep Google Calendar integrationConnect Notion docs and projectsMultiple time zone support
📊 Productivity
(6.8K)
free
9
Proton Authenticator
Proton Authenticator
Proton Authenticator
Secure 2FA Authenticator
Free

Securely manage your two-factor authentication codes with an open-source, end-to-end encrypted authenticator app. It offers seamless cross-device syncing, effortless import from other apps, and robust backup options, all protected by strict Swiss privacy laws. Take control of your digital security with a trusted and private solution.

End-to-end encrypted iCloud syncEffortless import from other authenticatorsSecure backup and export
📊 Productivity
(222)
free
10
One Calendar
One Calendar
One Calendar
All calendars in ONE place!
Free

Consolidate all your digital calendars into a single, easy-to-read view. Manage appointments, events, and birthdays from various providers like Google, Outlook, iCloud, and more, all within one application.

Integrates multiple calendar providersEasy-to-read overviewManage appointments and events
📊 Productivity
(20K)
free with in-app purchases
11
Teamup Calendar
Teamup Calendar
Teamup Calendar
The Shared Calendar for Groups
Free

This app facilitates efficient information sharing and task completion for groups through a shared calendar. It allows for organizing people, scheduling work, managing availability, and securely sharing events with teams or external parties.

View and update multiple sub-calendarsCentrally manage calendar via browserGranular access permissions
💼 Business
(8.8K)
freemium
12
NordVPN: VPN Fast & Secure
NordVPN: VPN Fast & Secure
NordVPN: VPN Fast & Secure
Safe & Quick VPN, Best Privacy
Free

Enhance your online privacy and security with a virtual private network. This app encrypts your internet traffic, shields your IP address, and protects your browsing from snoopers and cybercriminals. Enjoy fast, secure connections and access the internet with greater freedom.

Strong VPN encryptionThousands of VPN servers worldwideVPN auto-connect
🔧 Utilities
(678K)
subscription
13
Blue Mail - Email | Calendar
Blue Mail - Email | Calendar
Blue Mail - Email | Calendar
AI-Powered, Fast & Secure
Free

Manage all your email accounts from various providers in one unified, ad-free inbox. This app offers AI-powered writing assistance, an integrated calendar, and advanced spam management for enhanced productivity.

Unified inbox for multiple email accountsAI-powered email writing and summarizationIntegrated calendar with event management
💼 Business
(10K)
free with in-app purchases
14
Awesome Calendar Lite
Awesome Calendar Lite
Awesome Calendar Lite
Keep Your Busy Life Organized
Free

This app is a comprehensive time management and personal planner designed to organize your life. It offers an intuitive interface, customizable views, weather forecasts, and the ability to add notes, events, and reminders easily. It syncs with existing iPhone calendars to consolidate your schedule.

Intuitive user interfaceCustomizable event colors and fontsDetailed weather forecast
📊 Productivity
(879)
free with in-app purchases
15
Fantastical Calendar
Fantastical Calendar
Fantastical Calendar
Reminders & Todo List
Free

This powerful calendar and task management app offers intuitive natural language input for event creation, multiple calendar views, and robust task integration. It provides weather forecasts and advanced features like meeting polls and video conferencing integration for premium users.

Natural language event and task creationMultiple calendar views (day, week, month, year)Integrated task management (Todoist, Google Tasks)
📊 Productivity
(23K)
freemium
16
Naver Calendar
Naver Calendar
Naver Calendar
by NAVER Corp.
Free

Organize your life with a versatile calendar app. Manage schedules, tasks, habits, and diaries with customizable views and free stickers. Sync across devices and get weather updates.

Schedule, Anniversary, Task, Habit, Diary managementCustomizable calendar views (monthly, weekly, list, time)700 free stickers for customization
📊 Productivity
(104)
free with in-app purchases
17
Week Calendar - Smart Planner
Week Calendar - Smart Planner
Week Calendar - Smart Planner
Sync Agenda Tasks & Reminders
Free

This app offers a highly customizable calendar experience with multiple view options and automation tools. It allows for easy event management, integration with popular calendar services, and includes features like weather forecasts and calendar insights. An optional Pro version unlocks additional widgets and features.

Customizable calendar views (Day, Agenda, Month, Year)Event automation and templatesDrag-and-drop event rescheduling
📊 Productivity
(10K)
free with in-app purchases
18
Calendar · Planner & Reminders
Calendar · Planner & Reminders
Calendar · Planner & Reminders
Planner Organizer & Agenda
Free

This app offers a streamlined calendar experience with beautiful, intuitive views of your schedule. It unifies events and reminders, allows for quick natural language event entry, and provides contact history. It supports major calendar services and offers premium features through subscription.

Intuitive day and month viewsUnified events and remindersNatural language event entry
📊 Productivity
(59K)
free with in-app purchases
19
Monthly Calendar Moca
Monthly Calendar Moca
Monthly Calendar Moca
by aill, k.k. (JP)
Free

A visually appealing calendar app offering an infinite longitudinal monthly view for easy schedule checking. It integrates seamlessly with your existing iOS calendar data and provides essential customization options.

Infinite longitudinal scrollingMonthly calendar viewiOS calendar integration
📊 Productivity
(90)
free with in-app purchases
20
Google Calendar: Get Organized
Google Calendar: Get Organized
Google Calendar: Get Organized
Easily plan & schedule
Free

This official app helps you manage your schedule and stay organized. It automatically adds events from Gmail, syncs across devices, and allows for shared calendars. You can also create tasks, customize views, and integrate with Google Meet for collaboration.

Automatic event import from GmailCross-device synchronizationShared calendars for collaboration
📊 Productivity
(130K)
free with in-app purchases

Related searches

proton calendar: secure events