Best Proton Calendar Apps

Proton Authenticator & 2FA

Secure verification, MFA & OTP

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.

Proton Pass - Password Manager

Passkeys, 2FA & secure vault

Free

Secure your online identity with this free, open-source password manager. It offers end-to-end encryption, unlimited password storage across devices, and features like 2FA generation and email alias creation. Protect your accounts and enhance your digital security.

Lumo AI by Proton

Private Assistant from Europe

Free

This AI assistant prioritizes your privacy, offering help with productivity, curiosity, and staying informed. Developed by the team behind trusted encrypted services, it ensures your data remains 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.

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.

Notion Calendar

For your work and life

Free

Effortlessly manage your schedule and meetings with a unified calendar view. Seamlessly integrate with Google Calendar and Notion to keep all your work and life events in one place. Offers multiple time zone support and customizable widgets for quick access to your schedule.

Tuta Calendar: Secure Planner

Encrypted Events & Reminders

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.

Saturn Calendar

Manage and share your time

Free

This app is designed for students to manage complex school schedules, including rotating periods and group events. It simplifies planning with friends and classmates, allowing users to share schedules and coordinate activities easily. Stay organized for high school and college with features tailored to student life.

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 browsing from snoopers, and helps protect against scams and phishing. Enjoy fast, reliable connections and access thousands of servers worldwide.

Morgen Calendar & Planner

Calendars & Tasks in one app

Free

Consolidate all your calendars and tasks into one app. Schedule meetings, track to-dos, share availability, and join virtual calls on the go. This mobile companion syncs with your desktop productivity tools.

Custom Holiday Calendar

Create Your Own Holidays

Free

Design your personal yearly calendar by adding custom holidays, work schedules, and special events. This app offers complete control over what days are marked, ideal for personal use or professional tracking.

Kairos Calendar

by Joooy Inc.

Free

An AI-powered scheduling app designed for individuals and families. It offers smart auto-planning, voice input, and collaborative features. Personalize your experience with AI avatars and gamified rewards for efficient task management.

apole - Keyboard Calendar

Easy Schedule Adjustment

Free

This keyboard extension allows you to view and manage your calendar directly within messaging apps. Easily check and register appointments, and input dates and times with a drag calendar view, simplifying schedule adjustments on your phone.

Calendar All-In-One Planner

Sync Agenda Tasks & Reminders

Free

Enhance your standard mobile calendar with advanced features for better organization. This app offers a clear overview, powerful reminder functions, and easy event management. Customize your schedule with color-coding, templates, and support for various calendar services.

Zoho Calendar

Online business calendar

Free

This app is a collaborative online calendar designed for organizing personal and professional schedules. It allows users to create events, invite others, set reminders, and manage meeting rooms. Multiple views and widgets offer customizable organization, while offline access ensures availability without an internet connection.

CalenGoo Calendar

for Google Calendar and iCloud

$6.99

Access and manage your Google Calendar and iOS calendars with this app. It offers offline access, event synchronization, and advanced features like drag-and-drop event management and task list integration. Customize your calendar views and print your schedule.

Smart Calendar 2026: To-Do

Events, Reminders & To-Do List

Free

This daily planner app helps you manage events, reminders, habits, and notes in one place. Stay organized with country-wise holidays, multi-language support, and reliable notifications for personal tasks, work, and goals.