Best Proton Calendar Apps

250+ iOS apps curated and reviewed

4.5 avg rating
20 free apps
Updated October 2026

From beginner-friendly picks to power-user tools, our proton calendar list covers 250+ iPhone apps updated through October 2026. Compare ratings, prices, and screenshots in one place.

Compare top Proton Calendar Apps (October 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Proton Calendar: Secure EventsProton Calendar: Secure EventsFree4.0★ (1.4K)NoNoOct 2026
2Proton Drive: Cloud StorageProton Drive: Cloud StorageFree4.1★ (1.2K)NoYesOct 2026
3Proton AuthenticatorProton AuthenticatorFree4.4★ (242)NoNoOct 2026
4Proton Pass - Password ManagerProton Pass - Password ManagerFree4.8★ (8.4K)NoYesOct 2026
5Proton Mail - Encrypted EmailProton Mail - Encrypted EmailFree4.8★ (48K)NoYesOct 2026
6Lumo AI by ProtonLumo AI by ProtonFree3.8★ (525)NoYesOct 2026
7Proton VPN: Fast & SecureProton VPN: Fast & SecureFree4.6★ (93K)NoYesOct 2026
8Proton Wallet: Secure BitcoinProton Wallet: Secure BitcoinFree4.8★ (245)NoNoOct 2026

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😐(1.4K ratings)
FreeIn-App Purchases
Proton Calendar: Secure Events screenshot 1
Proton Calendar: Secure Events screenshot 2
Proton Calendar: Secure Events screenshot 3
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)
  • 🔗 Limited integration with other calendars
Proton Drive: Cloud Storage#2

Proton Drive: Cloud Storage by Proton AG

Private files & photos backup
Strong Contender
📊 Productivity
4.1😐(1.2K 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
  • 🗂️ Lacking key features like search and sorting
Proton Authenticator#3

Proton Authenticator by Proton AG

Secure 2FA Authenticator
Worth Considering
📊 Productivity
4.4😊(242 ratings)
Free
Proton Authenticator screenshot 1
Proton Authenticator screenshot 2
Proton Authenticator screenshot 3
Proton Authenticator screenshot 4

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.

What We Love

  • 🚀 Cross-platform support
  • 🔒 Secure cloud sync
  • 👍 Easy import from other authenticators
  • 🚀 Convenient 'next' feature for codes

Room to Improve

  • 🐛 Buggy UI (scrolling jitters, random sorting)
  • 👎 Lack of customization options (pin favorites, change icons)
  • 🐛 Sync/login issues on iPad

More Proton Calendar apps to explore

FAQ about Proton Calendar

What are the best proton calendar apps for iPhone?
Proton Calendar: Secure Events tops our proton calendar apps ranking as of October 2026, with a 4.0-star average from 1.4K App Store ratings, and it's free to download.
Yes — 20 of the top proton calendar apps we rank are free to download, including Proton Calendar: Secure Events and Proton Drive: Cloud Storage.
Proton Calendar: Secure Events has no ads and has no in-app purchases, according to its App Store listing as of October 2026.
We track 250+ proton calendar apps on the iOS App Store as of October 2026, ranked by rating, recency, and analysis of real user reviews.

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