A practical comparison
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Scheduling reliability depends on time zones, calendar conflicts, availability rules and cancellation flows. Test daylight-saving transitions and duplicate bookings before sharing a new booking link.
Source-linked facts describe each product's documented scope. An unreviewed dimension is marked unknown; a matching feature name is not a promise of identical behavior. Sources checked 2026-10-29.
WHEN
Reviewed 2026-10-29| Dimension | Calendly | WHEN |
|---|---|---|
| Workflow | appointment scheduling and public booking pages | Self-hosted scheduling with public booking pages and availability rules. |
| Price model | Free and paid subscription plans | free |
| License | Proprietary product/service under vendor terms | MIT |
| Platform | Browser-based scheduling; mobile app and browser extension | web Source |
| Self-hosting | Vendor-hosted service; local clients are documented separately | yes Source |
| AI contribution | Not assessed for the original product | claimed |
| Readiness | Not assessed | released |
When to explore WHEN.
The README describes a v1.0 scheduling MVP for solo operators. It documents time-zone-aware booking, event types and Google Calendar integration. Evaluate scheduling edge cases before moving real bookings.
What to check first.
Requires your own Supabase configuration; calendar sync and email require Google OAuth and Resend credentials. Feature claims have not been runtime-tested.
Work on a copy of a representative file. Compare booking pages, calendar conflicts, time zones against your actual requirements, then inspect the final output in the tool used by your collaborators.