OneCal review
Affordable multi-calendar synchronization with scheduling, mobile apps, and AI assistance.
Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026
OneCal is a calendar management platform for individuals, consultants, executives, assistants, recruiters, and teams coordinating multiple Google, Outlook, and iCloud calendars. It provides real-time synchronization, one-way and multi-way sync, unified calendar management, individual and collective scheduling links, calendar sharing, mobile apps, and an AI assistant. Its platform coverage includes web, iOS, Android, and API access, making it suited to people who need several calendars to work together rather than a single-calendar workflow.
Pricing is structured across three annual-billing tiers. Starter costs $5 per user per month and includes 2 calendars, unlimited calendar syncs, unlimited scheduling links, a unified calendar view, AI Assistant, and mobile apps. Essential costs $10 per user per month and raises the allowance to 5 calendars while retaining the same listed features. Premium costs $25 per user per month and supports 50 calendars, with dedicated support via Slack or Discord. A 14-day free trial is available without a credit card, but there is no free plan. The plan structure makes Starter a practical entry point for a small number of calendars, while users with broader calendar coverage need Essential or Premium.
OneCal's strongest fit is its combination of synchronization and scheduling. The unified view supports event creation, editing, deletion, and RSVP, while scheduling links can be individual or collective. Google Meet, Microsoft Teams, and Zoom meeting links are supported, and integrations include Zapier and MCP Server. Calendar sharing through web URLs and ICS feeds adds distribution options. Choose OneCal if you need centralized management across Google, Outlook, and iCloud calendars, especially with mobile access. It is less suitable for buyers seeking a free calendar synchronization product or who only need a single-calendar setup.
Questions about OneCal
Does OneCal have a free plan? No free plan is listed; paid plans start at $5/user/mo (Starter).
How much does OneCal cost? OneCal lists 3 paid plans; the lowest is Starter at $5/user/mo.
Is there a free trial of OneCal? Yes: a 14-day free trial; no card is needed.
What does OneCal run on? Web, iOS and Android. It runs in the cloud and as a mobile app.
What does OneCal integrate with? 9,000+ integrations, including Google Calendar, iCloud Calendar, Outlook Calendar, Zoom and Microsoft Teams.
Does OneCal offer a money-back guarantee? Yes: 14 days.
Who is OneCal built for? Solo users, small businesses, mid-market companies and enterprises (our editorial estimate).
OneCal pros and cons
- Where it wins
- Real-time two-way and multi-way sync for Google, Outlook, and iCloud
- Unified calendar management with scheduling links and video meeting support
- iOS and Android apps plus an AI assistant for calendar management
- Where it doesn't
- No free plan is available
- Starter supports only 2 calendars
- Dedicated Slack or Discord support is limited to Premium
OneCal fact sheet, pricing and score →
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