One Calendar is unclaimed —
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One Calendar
Get organised! Always have a clear overview of all your appointments everywhere you go.·onecalendar.nl
One Calendar is a calendar management app that lets users view and manage appointments across multiple calendar accounts in one place. It supports scheduling, recurring events, meeting invitations, and sharing appointments via other apps. It syncs with numerous calendar services and works offline.
What it's for
Manage appointments across multiple calendar accountsSetup meetings and recurring eventsInvite people to meetings and accept invitationsShare appointments via apps like WhatsAppView calendars offlineFilter appointments by colorSearch appointments
Features 16
- Add, update, and delete appointments
- Configurable widgets (Live tiles on Windows)
- Customizable colors per calendar and appointment
- Dark mode
- Invite people and accept incoming invitations
- Manage all online calendars (Google, Outlook, Office 365, Exchange, iCloud, CalDAV, Yahoo, GMX, Synology, Nextcloud, ownCloud, Mailbox.org)
- Multiple views: Day, Week, Month, Year, List/Agenda
- Personalized theming
- Quick filtering by color
- Search all appointments
- Setup recurrences
- Share appointments via other apps (e.g. WhatsApp)
- Support for multiple UI languages
- Theming with 170 color options and background pictures
- Week numbers shown in all views
- Work offline
At a glance
free tier
TypeMobile app
DeploymentInstalled (local)
PlatformsAndroid, iOS, macOS, Windows
LanguagesEnglish, German, French, Italian, Spanish, Catalan, Dutch, Portuguese, Chinese, Japanese, Korean, Hindi
CompanyCode Spark
Integrations
Google calendarOutlookOffice 365ExchangeiCloudCalDAVYahooGMXSynologyNextcloudownCloudMailbox.orgWhatsApp
Pricing
FreeFree
App is downloadable for free; a customer review notes it has no ads.