Can I open-source Fantastical?

KINDA · partial or early alternatives
price $4.75/moyou'd save $57/yrcategory 📅 schedulingreplaced by 0 people

Kinda. Cal.com cover the core of Fantastical, but they're early or partial — expect gaps like native Apple integrations, widgets, sync, proposals, and years of calendar edge cases and multiple calendar providers.

why people still pay

People still pay for Fantastical because people pay because one double booking or missed invite can cost more than years of subscription fees. The recurring cost buys OAuth refresh, webhooks, timezone databases, race conditions, reminders, deliverability, privacy, and uptime, not just the visible interface.

what you lose

xnative Apple integrations, widgets, sync, proposals, and years of calendar edge cases

xmultiple calendar providers

xteam routing and round-robin

xpayments

xtimezone edge-case maturity

the open-source alternatives

These projects already replace it, free.

CCal.comOpen scheduling infrastructure with booking pages, round-robin, routing forms, and app integrations37kaug 2026open source↗

What each one is, in full: Cal.com

no votes, no pay-to-list · just what's real

share on X ↗"I just replaced Fantastical ($4.75/mo) with open source"
the numbers

Fantastical pricing

planmonthlyannual (per mo)what you get
free$0$01 calendar set, 2 weeks of calendar mirroring, 3-day weather, 1 invitee/event and Meet With for 1 person; no Openings/Proposals/RSVP
individual$6.99$4.751 person; unlimited calendar sets/invitees/Meet With, 6-month mirroring, 10-day weather and all Fantastical Scheduling features
family$10.49$7.50Up to 5 family members with the full Individual feature set
teamcustom—Teams of any size; Individual features plus SSO and multi-host Openings

free tier1 calendar set, 2 weeks mirroring, 3-day weather, 1 invitee/event and Meet With for 1 person; no Fantastical Scheduling Openings/Proposals/RSVP

billingmonthly + annual; 14-day Premium trial

hidden costsTeam is per user; Family is a flat plan for up to 5 people. App-store taxes and regional prices can differ. Mid-cycle upgrades are prorated; education and military discounts require verification.

verified 2026-08-14 · source ↗

questions
Can I open-source Fantastical?

Kinda. Cal.com covers the core of Fantastical, but there are real gaps: native Apple integrations, widgets, sync, proposals, and years of calendar edge cases, multiple calendar providers. Read the honest list above before committing.

How much does Fantastical cost?

Fantastical costs about $4.75/month (Premium Individual, checked 2026-07-31), which is $57 per year.

What do I lose by replacing Fantastical?

Honestly: native Apple integrations, widgets, sync, proposals, and years of calendar edge cases; multiple calendar providers; team routing and round-robin; payments; timezone edge-case maturity. If any of those are load-bearing for you, keep paying.

Is there an open-source alternative to Fantastical?

Yes: Cal.com (Open scheduling infrastructure with booking pages, round-robin, routing forms, and app integrations)