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Sync multiple calendars in real-time, avoid double bookings, and manage all events in one place.

From $5/user/mo, billed monthly, free trial Visit Website
Reviews on G2
97 reviews tracked

The Bottom Line

Price
From $5/user/mo, billed monthly, free trial. Compare plans

Key facts

  • Syncs Google, Outlook, and iCloud calendars in real-time to prevent double bookings.
  • Offers privacy controls for event details shared during synchronization.
  • Provides a unified calendar view and easy-to-share scheduling links.

Pros

  • Prevents double bookings across multiple calendar providers effectively.
  • Offers granular control over privacy and shared event details.
  • Simplifies scheduling with easy-to-share links.
  • Provides a single, unified view for all calendars.
  • Strong commitment to data security and privacy (no data stored, analyzed, or sold).

Cons

  • No free tier, only a 14-day free trial.
  • Pricing is per user, which can add up for larger teams.
  • iCloud calendar updates can take up to 10 minutes to reflect.

What is OneCal?

OneCal is a calendar synchronization tool designed to prevent scheduling conflicts and simplify calendar management for individuals and teams. It seamlessly syncs events across Google Calendar, Microsoft Outlook, and Apple iCloud calendars in real-time, ensuring users are never double-booked. The platform offers privacy-focused syncing options, allowing users to control the level of detail shared between calendars, such as excluding event titles or specific information. Beyond syncing, OneCal provides a unified calendar interface to manage all connected calendars from a single view. Users can create, update, and delete meetings, RSVP to events, and join conference calls directly within the platform. It also facilitates easy scheduling by generating individual or team scheduling links, eliminating the need for back-and-forth communication. OneCal is ideal for professionals, teams, and anyone managing multiple personal and professional calendars who needs to maintain accurate availability and streamline their scheduling process. The product emphasizes strong data security and privacy, utilizing secure OAuth2 connections, requesting minimum necessary permissions, and encrypting data in transit and at rest. It does not store, analyze, or sell any calendar event data, making it a trustworthy solution for sensitive scheduling needs.

Available on: Web, iOS, Android

Ratings Across the Web

4.7 (97 reviews)

OneCal holds an aggregate rating of 4.7 out of 5 from 97 reviews across G2, last checked September 10, 2026.

Ratings aggregated from independent review platforms. Learn more

Preview

Key Features

  • Real-time multi-way calendar syncing (Google, Outlook, iCloud)
  • Privacy-focused sync with customizable event detail control (e.g., exclude titles, participants)
  • Unified calendar interface for managing all connected calendars
  • Individual and collective scheduling links
  • Ability to create, update, and delete meetings from unified view
  • RSVP to events and join conference calls directly
  • Mobile-friendly user experience
  • Secure OAuth2 connections and minimum permission requests

Pricing Plans

Free Trial

Pricing checked Nov 1, 2026. Source: onecal.io/pricing, read Nov 1, 2026

OneCal plans and prices, checked November 2026
Plan Price Details
Starter

$5 / user/month

  • 2 Calendars
  • Standard Support
Essential

$10 / user/month

  • 5 Calendars
  • Standard Support
Premium

$25 / user/month

  • 50 Calendars
  • Dedicated Support

Included in all plans

  • Unlimited Calendar Syncs
  • Unlimited One-on-one Scheduling Links
  • Unlimited Collective Scheduling Links
  • Scheduling Links Branding
  • Calendar View
  • User Provisioning API
  • Admin Managed Accounts
  • Remove OneCal Branding

Is OneCal worth the price?

Good value

OneCal's pricing is reasonable, especially for the Starter tier at $5/user/month for basic calendar syncing needs.

The jump to Essential at $10/user/month for only 3 additional calendars seems a bit steep, but the Premium tier at $25/user/month offers a significant increase in calendars. It's best for individuals or small teams needing efficient calendar management and scheduling links.

Full OneCal pricing: every plan, hidden costs and alternatives

How OneCal's pricing compares

At $5/user/mo, billed monthly, OneCal is the most affordable of its 5 comparable direct competitors.

OneCal
$5

Not ranked, different unit or currency: Google Calendar $7/user/mo, billed yearly.

Entry paid plan, monthly price, per user, billed monthly. Pricing checked Nov 1, 2026.

Email me when OneCal changes its price

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OneCal by the numbers

Toolradar data: OneCal's entry paid plan ($5/user/mo, billed monthly) ranks #2 of 13 (joint) for price among the Calendar tools with a verified entry price per user, where the median is $7/user/mo. As of Nov 2026.

OneCal compared with 98 Calendar tools on Toolradar, as of Nov 2026
Metric OneCal Peer median Position (1 is best)
Entry paid plan $5/user/mo, billed monthly $7/user/mo #2 of 13 (joint) tools priced per user, verified price
Free plan No 63% have one n/a
Listed as an alternative to 1 tool 2 #50 of 98 (joint)
User rating 4.7/5 (across the web, 97 ratings) 4.6/5 #9 of 39 (joint) tools with 20+ reviews

Each position is counted among the tools that have data for that row, as noted under it. A lower entry price ranks higher; prices are read on vendor pages and compared only with tools priced on the same basis. All Calendar data · How we compute this. Advertising and placement fees are not inputs to any position.

Cite this: Toolradar, “OneCal by the numbers”, Nov 2026.

Reviews

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4.7/5

Across 97 verified user reviews on G2

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OneCal FAQ

How does OneCal help prevent double bookings across different calendar services?

OneCal synchronizes events across Google Calendar, Microsoft Outlook, and Apple iCloud calendars in real-time. This ensures that your availability is consistently updated across all platforms, effectively preventing scheduling conflicts and double bookings.

Which teams would benefit most from using OneCal?

OneCal is ideal for professionals, teams, and anyone managing multiple personal and professional calendars. It helps maintain accurate availability and streamline the scheduling process, making it suitable for groups that frequently schedule meetings or manage complex calendars.

How does OneCal compare to Calendly for scheduling meetings?

While both OneCal and Calendly facilitate meeting scheduling, OneCal primarily focuses on real-time calendar synchronization across multiple providers to prevent double bookings. It also offers a unified calendar view and granular privacy controls for shared event details, which complements its scheduling link feature.

What kind of privacy controls does OneCal offer for synced events?

OneCal provides privacy-focused syncing options, allowing users to control the level of detail shared between calendars. Users can choose to exclude event titles or specific information, ensuring sensitive data remains private while still reflecting busy times.

Does OneCal include a free tier for users?

OneCal does not offer a permanently free tier; however, it provides a 14-day free trial for users to evaluate its features. After the trial, it transitions to a paid subscription model.

Can users manage all their connected calendars from a single interface in OneCal?

Yes, OneCal provides a unified calendar interface that allows users to manage all connected calendars from one view. Within this interface, users can create, update, and delete meetings, RSVP to events, and join conference calls directly.

What are the primary limitations of using OneCal?

OneCal does not offer a permanent free tier, only a 14-day free trial. Its pricing is also per user, which can increase costs for larger teams, and updates for iCloud calendars may take up to 10 minutes to reflect.

How does OneCal pricing compare with other Calendar tools?

OneCal's entry paid plan ($5/user/mo, billed monthly) ranks #2 of 13 (joint) for price among the Calendar tools with a verified entry price per user, where the median is $7/user/mo. Prices are read on each vendor's own pricing page and compared only with tools priced on the same basis. Source: Toolradar, Nov 2026.

Source: onecal.io

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