OneCal Pricing 2026: Plans, Costs & Cheaper Alternatives

OneCal pricing starts at $5 per user per month, billed annually, and there is no free tier. A 14-day trial is available, after which you pay or lose access. If you need Google Calendar and Outlook sync, SYNCDATE starts free — 2 calendars, 2 accounts, no credit card — and the Plus plan is €8.99/month for up to 20 calendars across 5 accounts. According to Atlassian's 2024 State of Teams report, 76% of knowledge workers manage events across multiple calendar systems, so pricing and sync reliability matter.

OneCal Plans at a Glance (July 2026)

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Prices as published on onecal.io/pricing, captured 14 July 2026. All figures are the annual-billing rates in USD; OneCal's monthly rates are behind a client-side toggle and are not in the page we captured. Plans may change.

> Quick Answer: OneCal costs $5, $10 or $25 per user per month billed annually, for 2, 5 or 50 calendars, with no free tier. SYNCDATE is free forever for 2 calendars, and €8.99/month for up to 20 calendars. If you want a permanent free plan, or you sync through iCal feeds or CalDAV providers such as Fastmail and Nextcloud, SYNCDATE fits better. If you want OneCal's unified calendar view as a primary feature, their pricing may be justified.

What Each OneCal Plan Includes

The unusual thing about OneCal's line-up: the three plans are feature-identical. OneCal's own summary says every plan includes the full set of integrations and apps, and that you pick the tier matching the number of calendars and the level of support you need. So the decision is a calendar count, not a feature checklist.

Starter — $5/user/month billed annually ($60/year)

Two calendars. This covers a one-person workflow — one work calendar, one personal. Connect your accounts, pick the calendars, and OneCal handles the rest.

Essential — $10/user/month billed annually ($120/year)

Five calendars, marked "Most popular" on their pricing page. Aimed at people juggling several work and personal calendars. A freelancer with two Google Workspace accounts and a personal Gmail would typically land here.

Premium — $25/user/month billed annually ($300/year)

Fifty calendars, plus dedicated support over Slack or Discord instead of standard support. That support difference — and the calendar ceiling — is what separates it from Essential.

One thing to note if you're reading their page: "Remove OneCal Branding" is bulleted under all three plans, while their own comparison table lists it as Premium-only. We're not going to guess which is right; check it with them before buying on that basis.

Things Worth Knowing Before You Buy

No free tier means a hard deadline to evaluate

OneCal's 14-day trial gives you two weeks to decide if it works for your workflow. Calendar sync reliability often takes longer to assess — you want to see what happens when a meeting gets moved last-minute or when a sync fails silently. After 14 days, you're paying whether you're confident or not. OneCal's FAQ is explicit that there is no free state to fall back to.

The monthly price isn't on the page

OneCal's pricing page has a monthly/annual toggle that runs in the browser, and only the annual figures appear in the page itself. So the $5, $10 and $25 numbers above are annual-billing rates. If you want to pay monthly, get the monthly figure from OneCal directly rather than assuming it's the same.

iCloud is supported — but the feed formats aren't listed

OneCal publishes support for Google Calendar, Outlook and iCloud Calendar. Their pages list no .ics feed or CalDAV support, so if you subscribe to an external feed — a team sports schedule, a conference agenda, a client's shared calendar — check with them before buying on that basis. SYNCDATE supports iCal feeds as a read-only source, and CalDAV two-way for iCloud, Fastmail and Nextcloud.

One caveat OneCal states themselves: iCloud Calendar updates can take up to 10 minutes to reflect on the other calendars, even though the rest of their sync is advertised as real-time.

Pricing grows with your calendar footprint

OneCal's plan structure means that adding calendars pushes you to the next tier, and the jump from Essential to Premium is $10 to $25 per user per month. Count your calendars before you pick.

The Math for Common Scenarios

If you sync 2 calendars (one Google, one Outlook):

• OneCal Starter: $5/user/month billed annually = $60/year
• SYNCDATE: Free. Forever. No credit card.

If you sync 5 calendars across 3 accounts:

• OneCal Essential: $10/user/month billed annually = $120/year
• SYNCDATE Plus: €8.99/month (~€89/year)

If you sync more than 20 calendars:

• OneCal Premium: $25/user/month billed annually = $300/year, up to 50 calendars
• SYNCDATE Pro: €16.99/month (~€169/year), up to 100 calendars across 20 accounts

If you also need iCal feed sync:

• OneCal: not on their published provider list — ask them
• SYNCDATE Plus: included (iCal as read-only source)

When OneCal Is Worth the Price

OneCal earns its place in specific situations:

You want a very simple, opinionated setup. OneCal's interface is intentionally minimal — connect two accounts, pick calendars, done. If you find SYNCDATE's per-sync configuration model more involved than you want, OneCal's setup is genuinely faster.

You're already paying for it and it works. If your current workflow has no double-booking issues and you're not hitting plan limits, switching incurs friction. Evaluate before switching.

You want a unified calendar view as the main event. That's OneCal's centre of gravity, and sync is the supporting act.

When OneCal Isn't Worth It

You want to try before committing. Two weeks is a short window for evaluating sync reliability, and there's no free plan to fall back on. SYNCDATE's free tier lets you test indefinitely with 2 calendars before paying anything.

You sync through feeds or CalDAV. SYNCDATE supports iCal feeds as a read-only source and CalDAV two-way for iCloud, Fastmail and Nextcloud. See how calendar sync works with iCal for more detail.

You care about data location. SYNCDATE runs on Hetzner's Germany-based infrastructure and encrypts OAuth tokens with AES-256-GCM. If EU data residency matters to you, ask any vendor you're considering — including us — to put their answer in writing.

Your calendar count sits between the tiers. OneCal's steps are 2, 5 and 50 calendars. SYNCDATE Plus covers 20 calendars across 5 accounts at €8.99/month. See the calendar sync pricing guide for a full market comparison.

How to Switch from OneCal to SYNCDATE

1. Sign up for SYNCDATE at syncdate.app — free, no credit card required
2. Connect your Google and/or Outlook accounts via OAuth
3. Create syncs matching your OneCal configuration (source and target calendars, direction)
4. Let SYNCDATE run for a day and verify events are appearing correctly on both sides
5. Cancel OneCal once you're satisfied
6. Check your calendars afterwards — some sync tools remove the event copies they created when you disconnect, so confirm with OneCal what happens to yours before you cancel

Using SYNCDATE's free tier to verify before cancelling OneCal means no overlap cost.

Related: [OneCal vs SYNCDATE full comparison](/compare/onecal-alternative), [Best calendar sync tools compared](/compare/best-calendar-sync-tool-comparison), [CalendarBridge pricing breakdown](/compare/calendarbridge-pricing), [Reclaim.ai alternative comparison](/compare/reclaim-alternative)