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OneCalendar is a cross-platform calendar application designed to unify multiple calendar services into a single, clear interface. It supports Google, Outlook, iCloud, Exchange, and CalDAV calendars, offering offline access, multiple views, widgets, and sharing options.
With a strong focus on simplicity and customization, OneCalendar is available on Android, iOS, macOS, and Windows.
| Plan | Price | Featured |
|---|---|---|
| Free Version | $0 (Free) | Multiple calendar sync, Offline access, Basic views and widgets |
| Premium (iOS) | ~€5 one-time payment | Theming and colors, Advanced search, Extended history sync |
| Premium (macOS) | ~€40 one-time payment | Printing support, Automatic day rollover, Immediate sync |
| Premium (Android) | One-time payment (Price varies by store) | Widget configuration, Appointment colors, Ad-free experience |
| Premium (Windows 10/11) | One-time payment (Price varies by store) | Printing, Hide promotional windows, Dashboard automation |
Price details: https://www.onecalendar.nl/support/premiumversionfeatures
Competitor |
Pros |
|---|---|
| Google Calendar | OneCalendar offers broader cross-platform consistency, especially on Windows and Android, where Google Calendar feels web-centric. Users often prefer OneCalendar’s offline access, unified list view, and deeper visual customization, making it easier to manage complex schedules without relying on constant connectivity. |
| Fantastical | Compared to Fantastical’s subscription model, OneCalendar’s one-time payment is more cost-effective long term. It provides a simpler interface with less automation complexity, which many users find faster to learn and more predictable for daily scheduling across multiple calendar providers. |
| Outlook Calendar | OneCalendar supports Outlook while also integrating many non-Microsoft services, giving it an advantage for mixed ecosystems. Its clean design, multiple viewing modes, and offline support appeal to users who find Outlook Calendar heavy and tightly coupled to Microsoft workflows. |
| Apple Calendar | Unlike Apple Calendar, OneCalendar works consistently outside the Apple ecosystem. Users benefit from advanced theming, configurable widgets, and better handling of shared and external calendars, particularly when syncing with Google or Exchange accounts. |
| Morgen | OneCalendar focuses more on visual clarity and simplicity, whereas Morgen emphasizes scheduling logic. For users wanting a straightforward, affordable calendar without complex planning features or recurring subscriptions, OneCalendar is easier to adopt and maintain. |
Competitor |
Cons |
|---|---|
| Google Calendar | Google Calendar benefits from deep integration with Gmail and Google Meet, which OneCalendar lacks. Users who rely heavily on automatic email-based event creation or native video meeting workflows may find OneCalendar less seamless in comparison. |
| Fantastical | Fantastical offers advanced natural language input and task management that OneCalendar does not match. Power users who depend on smart parsing, integrated reminders, and automation may find OneCalendar more basic in functionality. |
| Outlook Calendar | Outlook Calendar excels in enterprise collaboration and email-calendar integration. OneCalendar lacks native email and team scheduling tools, making it less suitable for organizations that depend on Microsoft 365 for meeting coordination. |
| Apple Calendar | Apple Calendar integrates tightly with iOS and macOS system features like Siri and Focus modes. OneCalendar cannot fully replicate these OS-level automations, which may be noticeable for users deeply embedded in Apple’s ecosystem. |
| Morgen | Morgen provides structured daily planning and task prioritization features that OneCalendar lacks. Users seeking calendar-driven productivity workflows and time-blocking analytics may find OneCalendar too lightweight. |
