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 (Android, iOS, MacOS and Windows).
All One Calendar APK versions
No versions available.
Frequently Asked Questions
Yes. Every One Calendar APK on APK.now is automatically scanned and the cryptographic signature is verified against the original publisher's certificate (Code Spark). Files that fail verification are removed before they ever reach the catalog.
Enable 'Install from unknown sources' for your browser (or the file manager you use to open the APK) under Settings → Apps → Special access. Tap the downloaded One Calendar APK, confirm the prompts, and Android installs it just like any app from the Play Store.
The latest One Calendar version available on APK.now is the latest version. We track new releases from Code Spark continuously and add them to the catalog as soon as they pass verification.
Yes — every One Calendar APK and every version on APK.now is free to download. We never gate downloads behind sign-up, surveys, or paywalls.
APK.now keeps a full archive of every One Calendar release, including older versions that the Play Store has already replaced. The APKs work on devices without Google Play Services (Huawei, GrapheneOS, Amazon Fire) and are signature-verified so you can be confident the file is genuine.