One Calendar

Code Spark

In-app purchases

About this app

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 (Android, iOS, MacOS and Windows).

Ratings and reviews

I've been looking for a calendar app that works with my self hosted Nextcloud server (version 29). The app is incredibly easy to use and setup. Very simple GUI which is exactly what I want. I haven't had it long enough to see if the notifications work or not but it does sync without issues to and from my Nextcloud server. Very impressed so far. Also, I looked around the app to see if there is a donate or send me a beer/coffee but didn't see one as I want to send them few bucks.

I've used this for years and have loved being able to bring all my calendars to one place but for the last few months my widget will not update or it get stuck on the wrong month. I have to uninstall and reinstall the widget which at first wasn't too bad while I waited for it to be fixed but I'm SICK OF IT! I have been more than patient.. get this app together. On top of that even with my timezones being set to EST it keeps switching to UTC which is 5hrs off. I'm about ready to delete this app

I love this app, it has really helped me be more organizedand not schedule myself for 2 things at once by accident. I use Teams for work and Google calendar for my personal life, and I love that I can see both so when I'm scheduling something I can see if it conflicts with anything else in my life. Also when things automatically upload to any calendar they go here as well.

What's new

Fix Exchange authentication