Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

One Calendar Screenshots

iPad

iPhone

About One Calendar

The most popular app to view all your calendars like Google, Live, Outlook, iCloud, Exchange, Office365, Yahoo, Nextcloud, Synology, GMX, Mailbox.org, ownCloud and more. OneCalendar integrates all your calendars into an easy-to-read overview. View and manage all your appointments, events and birthdays.

OneCalendar is available on all platforms.

What's New in the Latest Version 5.4.1

Last updated on Apr 16, 2024

Old Versions

Update development tools

Version History

5.4.1

Apr 16, 2024

Update development tools

5.3.0

Feb 24, 2024

Fix google event types.

5.2.5

Dec 27, 2023

Fixed Google occurrence bug

5.2.2

Oct 29, 2023

Fix Yahoo caldav calendar url

5.2.1

Sep 29, 2023

Fixes for upgrade to iOS17

5.1.1

Aug 25, 2023

Updated Analytics

5.1.0

Jul 30, 2023

Updated analytics.

5.0.0

Jun 23, 2023

Unified code

4.6.0

May 11, 2023

Added Danish language

4.5.1

Apr 27, 2023

Bugfix create/edit appointment dialog on older iOS versions

4.5.0

Apr 21, 2023

Updated development tools.

4.4.1

Apr 8, 2023

Fix outlook bug.

4.4.0

Mar 10, 2023

Fixed Microsoft API bug

4.3.2

Oct 15, 2022

Added Polish language

4.2.0

Jun 25, 2022

Added Portugese translations

4.1.2

Jun 16, 2022

Bug fixes

4.1.1

Jun 12, 2022

Bug fixes

4.1.0

Jun 3, 2022

- Improved security
- Added time sensitive notifications

4.0.0

May 8, 2022

Bug fixes

3.10.4

Apr 15, 2022

Minor fixes

3.10.3

Mar 20, 2022

- Warning deprecated Microsoft API
- Fixed widget bug

3.9.2

Feb 11, 2022

Enable MS Graph API

3.8.0

Dec 27, 2021

Minor changes and bug fixes

3.7.4

Oct 16, 2021

Share an appointment, support for multiple iCloud/CalDav accounts, new options like appointment length, iCloud/CalDav background sync interval and more.

3.7.3

Oct 8, 2021

Share an appointment, support for multiple iCloud/CalDav accounts, new options like appointment length, iCloud/CalDav background sync interval and more.

Feedback Report

One Calendar FAQ

How to download One Calendar if it’s not available in your country?

Click here to learn how to download One Calendar in restricted country or region.

What's the minimum requirements to run One Calendar?

Check the following list to see the minimum requirements of One Calendar.

iPhone

Requires iOS 14.2 or later.

iPad

Requires iPadOS 14.2 or later.

Mac

Requires macOS 10.15 or later.

iPod touch

Requires iOS 14.2 or later.

What language does One Calendar support?

One Calendar supports English, Catalan, Danish, Dutch, French, German, Hindi, Italian, Japanese, Korean, Polish, Portuguese, Simplified Chinese, Spanish, Turkish