One Calendar is a productivity app developed by Code Spark.
Download Statistics
One Calendar has been downloaded 1.8 million times. In the last 30 days, the app was downloaded 10 thousand times.
User Ratings
One Calendar is rated 4.69 out of 5 stars. The rating is based on 60 thousand ratings.
App Information
One Calendar is FREE to download. The APK download size is 68.45 MB. The latest version available is 6.901.0. The last update was on November 22, 2025.
Technical Requirements
One Calendar requires Android 6.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play April 2018.
Description
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).
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One Calendar, hosted on my Android, providing perfect 3-way sync to girlfriends iPhone and Vivaldi calendar on my laptop. Brilliant. I was starting to think it wasn't possible.
★★★★★Dibbles· May 7, 2026
Consistently good, reliable. Recommend. Perfect for multiple shared calendars and work and personal. Better than Outlook and syncs perfectly with Outlook too.
★★★★★Randall E Bryant· Apr 9, 2026
The perfect app for viewing. And modifying your iCloud calendar on your Android devices.
★☆☆☆☆Bryan Chu· Apr 4, 2026
Useless doesn't support Cal DAV properly noob app. Lol noob support here in review too says email them. Umm no, I changed to another app that works, not going to email you lol
★★☆☆☆Brandi White· May 9, 2026
Works really well on phone but will not work on Cozyla. I reached out to customer service and have not gotten anything back. Now I need to find a calendar that will sync with my Outlook calendar
★☆☆☆☆Erin Morash· May 27, 2026
App on Android mobile UI does not connect Google or Microsoft accounts. After having trouble syncing the app on my Android device with the appointments recorded on the app on my laptop, could not reload any of my mobile accounts. I have a paid premium account, and I cannot reload my Google, microsoft calendars to my Android mobile device. There used to be a simple email contact form for malfunctions, but that's gone now too.
★☆☆☆☆B P· Jun 16, 2026
Please stop with the annoying feedback reminders. I would have given it 5 stars, but this is for those reminders.
Google Play Rankings for One Calendar
This app is not ranked
Technologies used by One Calendar
13 permissions·39 libraries
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Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
