OneCal Alternative, Hetk

Why people look for OneCal alternatives

OneCal is a popular calendar sync tool, but its plans are tiered by calendar count, and the jumps are steep: its 2-calendar Starter plan is $60/year, and connecting a third calendar moves you to the 5-calendar Essential plan at $120/year. If you need real-time sync without paying premium prices, you start looking for alternatives.

What Hetk offers instead

Hetk delivers the core features people use OneCal for, real-time bi-directional sync across Google Calendar, Microsoft Outlook, and Apple iCloud, at a fraction of the cost. Plus, privacy controls come built-in at all pricing tiers, not as add-ons.

Quick comparison

What OneCal does better

Scheduling links: OneCal includes Calendly-style booking links, letting you share your availability with others. Hetk focuses purely on calendar sync, if you need booking pages, you’d use a dedicated scheduling tool like Calendly.

Unified calendar view: OneCal provides a combined calendar interface where you can view and manage all your calendars in one place. Hetk syncs events between your existing calendars; it doesn’t provide a separate calendar UI.

Native mobile apps: OneCal has iOS and Android apps. Hetk is a web application, accessible from any browser on any device.

What Hetk does better

Price: Hetk’s Professional plan ($50/year for up to 8 sync pairs) is less than half the cost of OneCal’s basic plan ($60/year for 2 calendars). Hetk supports unlimited calendars, so if you manage 5+ calendars, the savings add up fast.

Privacy controls included: Hetk includes privacy features (Mark as Private, Show As, Identity Transform) at every tier. You don’t need a more expensive plan to protect sensitive event details.

Apple iCloud support: Both support iCloud, but Hetk includes it at the same price point, no higher tier required.

Simpler, focused product: Hetk does one thing well: keep calendars in sync. No scheduling features, no mobile apps, just reliable sync with privacy controls. If that’s all you need, Hetk is faster and cheaper to use.

Who should choose Hetk

Choose Hetk if:

• Your main need is keeping calendars in sync across providers
• You want strong privacy controls for sensitive events
• You manage 3 or more calendars and want to minimize cost
• You prefer a simple, focused tool over an all-in-one platform

Stay with OneCal if:

• You need scheduling/booking links (use Hetk + Calendly instead)
• You need a unified calendar view to manage events from one interface
• You prefer native mobile apps

Where OneCal’s pricing adds up

OneCal’s plans are tiered by the number of calendars you connect:

• Starter — $60/year, 2 calendars
• Essential — $120/year, 5 calendars
• Premium — $300/year, 50 calendars

Two things follow from that structure. First, the tier jumps are large: connecting a third calendar moves you from Starter ($60) to Essential ($120), so your bill doubles even though you only added one calendar. Hetk connects unlimited calendars on every plan, so adding calendars never changes your bill. Second, OneCal pairs sync with booking pages and a unified calendar view — if you only need sync, those bundled features are part of what you’re paying for. Hetk is sync only, with iCloud support and privacy controls standard at $15–50/year.

Cost comparison: real scenarios

These use OneCal’s tier that actually fits each calendar count (you can’t buy “just one more calendar” — you move up a whole tier):

Freelancer managing 4 calendars (personal, 3 client accounts):

• OneCal: needs the 5-calendar Essential plan = $120/year
• Hetk: $50/year (Professional, unlimited calendars / up to 8 sync pairs)
• Savings: $70/year (58%)

Executive with personal, corporate, and board calendars (3 calendars):

• OneCal: a third calendar exceeds Starter’s 2, so Essential = $120/year
• Hetk: $50/year
• Savings: $70/year (58%)

Agency managing 6 shared calendars:

• OneCal: 6 calendars exceeds Essential’s 5, so the next tier is Premium = $300/year
• Hetk: $50/year (Professional)
• Savings: $250/year (83%)

OneCal pricing and plan limits verified June 2026 from OneCal’s pricing page; plans may have changed since.

What you keep when switching

• Real-time bi-directional sync
• Privacy controls (Mark as Private, Show As, Identity Transform)
• Multi-provider support (Google, Outlook, iCloud)
• Unlimited calendars, limited sync pairs (plan-dependent)

What you’re giving up (and why it matters)

Scheduling/booking pages, OneCal includes Calendly-style links. If you use them, switch to Calendly standalone ($10/month) and pay $50 (Hetk) + $120 (Calendly) = $170/year. Still cheaper than high-tier OneCal plans. If you don’t use booking pages, you lose nothing important.

Unified calendar view, OneCal lets you view all calendars in one interface. Hetk syncs events but doesn’t provide a separate UI. Keep using Google Calendar, Outlook, or your preferred calendar app, Hetk just keeps them in sync.

Mobile apps, OneCal has iOS and Android apps. Hetk is web-only. Web apps work fine on mobile, but if you need a native app, this is a gap. Many users find the web app perfectly adequate.

Step-by-step: switch from OneCal to Hetk

1. Visit Hetk and start the free trial, No credit card required, 21 days of full access
2. Connect your calendar accounts, Google, Outlook, iCloud (same ones you use with OneCal)
3. Recreate your sync relationships, This mirrors your OneCal setup. Usually 5 minutes for 2-3 syncs
4. Test for a week, Create a test event and verify it syncs across all providers
5. Verify privacy settings, Check that your privacy rules (Mark as Private, etc.) are working as expected
6. Disable OneCal, Once confident, disable OneCal’s syncs. Your events stay in place; only the sync service changes
7. Keep the free tier, After trial ends, upgrade to Personal ($15) or Professional ($50), or stay on the free tier (1 sync relationship)

FAQ

Can I migrate from OneCal to Hetk?

Yes. Simply connect the same Google, Outlook, and iCloud accounts to Hetk, set up your sync relationships, and you’re done. No data export or migration needed, Hetk syncs directly to your calendar accounts.

Will I lose any data when switching?

No. Your calendar events live in Google Calendar, Outlook, and iCloud. OneCal was just syncing between them. When you switch to Hetk, the events stay exactly where they are, you’re just changing the sync service.

Will I lose any features when switching to Hetk?

You’ll lose booking links (use Calendly for that) and the unified calendar view. You keep everything else: real-time sync, privacy controls, multi-provider support, and bi-directional sync.

How many calendars can I sync?

Hetk supports unlimited calendars on both plans. Personal plan supports up to 3 sync pairs; Professional supports up to 8 sync pairs. OneCal’s plans are tiered by calendar count (2, 5, then 50), so the gap widens each time another calendar pushes you into a higher tier.

Is Hetk’s sync as fast as OneCal?

Hetk uses webhooks for real-time sync, events sync in seconds, just like OneCal. No polling delays, no waiting.

What if I’m using OneCal’s scheduling pages?

If you need booking links, pair Hetk ($50/year) with Calendly ($10/month = $120/year). Total: $170/year for sync + booking. Still cheaper than many OneCal tier upgrades.

What happens after the 21-day trial?

You can stay on Hetk’s free tier (1 sync relationship), or upgrade to Personal ($15/year for 3 calendars) or Professional ($50/year for 8 calendars). No credit card required to start.

Can I use both OneCal and Hetk at the same time?

Not recommended. Running two sync services on the same calendars creates duplicate events and conflicts. Switch completely to one or the other, or use them for different sync relationships.

Ready to switch? Start your 21-day free trial, no credit card needed.

Related: Hetk vs OneCal full comparison | Calendar sync for freelancers