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OneCal

Calendar sync, booking links and a unified calendar view

Free trial · from $5/moCalendarChecked Oct 9, 2026
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OneCal, as pictured on onecal.io
How OneCal presents itself. Image from onecal.io.

What is OneCal?

OneCal keeps Google Calendar, Outlook, iCloud and CalDAV calendars in step by copying events between them in real time, so a meeting on one calendar blocks the same time on the others. The same subscription includes one-on-one and collective booking links, a unified view for managing every connected calendar, and an AI assistant. There is no free plan: every account starts with a 14-day trial and then needs one of three per-user plans.

OneCal is a paid product with a free trial, starting at $5 per user / month, billed annually ($6 billed monthly). See every plan

Good for

  • People whose work and personal calendars keep producing double bookings
  • Consultants and freelancers holding calendars from several clients
  • Teams that want calendar sync and booking links in one subscription

Worth knowing

  • There is no free plan. When the 14-day trial ends, syncs are paused, cloned events are removed and booking links are disabled until a plan is bought.
  • Starter connects 2 calendars per user and Essential 5. Removing OneCal branding from booking pages and dedicated support need Premium.
  • In the mobile apps, calendar syncs are view-only and booking links cannot be created or edited; that setup is done in the web app.
  • The macOS app on the plan table is the iPhone and iPad app, which the App Store marks as designed for iPad and limits to Macs with an M1 chip or later.

Key features

Real-time calendar sync
Copies events between Google Calendar, Outlook, iCloud and CalDAV calendars, one-way or multi-way, so each calendar shows the time as taken. Every plan allows unlimited sync configurations.
Privacy controls for synced events
Choose which details are copied, such as titles, descriptions, participants, locations and meeting links. Clones can be marked private, and events can be excluded by color or category.
Scheduling links
Unlimited one-on-one and collective booking links with buffers, minimum notice, custom questions, manual confirmation, workflows and embedding. Availability is read from all connected calendars.
Unified calendar view
One interface for every connected calendar: create, edit and delete events, RSVP to invites, join calls, hide the clones made by sync and see when teammates are free.
AI Assistant and MCP server
A built-in chat answers questions about your schedule and proposes changes to events, syncs and booking links, each applied only after you confirm. An MCP server connects Claude, ChatGPT or other MCP clients.
Team administration
The plan table lists OIDC/SAML SSO, SCIM directory sync, audit logs, admin-managed accounts and a user provisioning API on every tier. The docs say several of these are enabled on request.

OneCal pricing

Starts at
$5 per user / month, billed annually ($6 billed monthly)
Free plan
None
Free trial
14-day free trial on every plan, no credit card required
Starter$5per user / month, billed annually ($60)Up to 2 connected calendars per user, with unlimited calendar syncs and booking links. $6 per user when billed monthly.
Essential$10per user / month, billed annually ($120)Up to 5 connected calendars per user, with the same sync, booking and calendar features. $12 per user when billed monthly.
Premium$25per user / month, billed annually ($300)Up to 50 connected calendars per user, removal of OneCal branding, dedicated support and onboarding help. $30 billed monthly.

Read from onecal.io on Oct 9, 2026. Prices change, so confirm with OneCal before you buy.

Pricing in detail

Ways to pay less

  • Annual discount2 months free with annual billing

    The pricing FAQ and billing docs say yearly billing gives 2 months free: $60, $120 or $300 per user a year against $6, $12 or $30 a month. The page's toggle labels this 20% off.

    Stated on onecal.io
  • NonprofitDiscount for nonprofits and open-source groups

    The pricing FAQ says OneCal provides a discount to non-profit and open-source organizations. It does not state the amount.

    Stated on onecal.io

Works with

OneCal alternatives

All OneCal alternatives comparedAll calendar and scheduling apps

Common questions

Is OneCal free?

No, OneCal is a paid product, but you can try it first. 14-day free trial on every plan, no credit card required.

How much does OneCal cost?

OneCal lists 3 plans. Starter: $5 per user / month, billed annually ($60). Essential: $10 per user / month, billed annually ($120). Premium: $25 per user / month, billed annually ($300). Prices were read from onecal.io on Oct 9, 2026.

What platforms does OneCal work on?

OneCal is available on Web, macOS, iOS and Android.

Does OneCal offer any discounts?

OneCal publicly lists the following: 2 months free with annual billing; Discount for nonprofits and open-source groups.

Does OneCal have a Windows app?

No Windows app was listed when its pages were read on Oct 9, 2026. OneCal is listed for Web, macOS, iOS and Android.

Does OneCal have a Linux app?

No Linux app was listed when its pages were read on Oct 9, 2026. OneCal is listed for Web, macOS, iOS and Android.

Is OneCal open source?

OneCal is not described as open source on its own site, as read on Oct 9, 2026.

What does OneCal integrate with?

OneCal's listing names Google Calendar, Outlook, iCloud Calendar, Zoom, Microsoft Teams, Google Meet and Zapier. A listing names up to eight integrations, so it may connect to more.

Who makes OneCal?

OneCal is made by OneCal SHPK.

What are the alternatives to OneCal?

The closest alternatives to OneCal in our directory are CalendarBridge, Reclaim.ai, Calendly, Morgen and Cal.com. Each one has a side-by-side comparison with OneCal.

Sources for this page

The prices, plans, platforms and features above were read from these pages on Oct 9, 2026.