Calendly vs Clerk
The scheduling category leader — dominant polished SaaS booking tool
vs. User management and authentication as a service
Pricing tiers
Calendly
Free
$0. 1 user. 1 event type. Unlimited 1-on-1 meetings. Basic calendar integrations.
Free
Standard
$12/user/mo. Unlimited event types. Group events. Remove branding. 7 integrations.
$12/mo
Teams
$20/user/mo. Round-robin, collective, Salesforce/HubSpot, Zapier, routing, metrics.
$20/mo
Enterprise
Starts ~$15,000/year (5-10 users). SSO, SCIM, advanced routing, dedicated success manager, SLA.
$15000/mo
Clerk
Free
50k MAU included. No SSO/SAML. Perfect for side projects and early prototypes.
Free
Pro
$25/mo (or $20/mo annual). 50k MAU, $0.02 each after. 1 enterprise SSO connection per app. Webhooks, JWT templates, custom session duration.
$25/mo
Business
$300/mo (or $250/mo annual). Advanced organizations, enhanced support, additional enterprise features.
$300/mo
Enterprise
Custom. Volume MAU discounts, SLA, workspace-wide SAML SSO, dedicated support.
Custom
Free-tier quotas head-to-head
Comparing free on Calendly vs hobby on Clerk.
| Metric | Calendly | Clerk |
|---|---|---|
| mao | — | 100 orgs/month |
| mau | — | 50000 users/month |
| sso connections | — | 0 connections |
Features
Calendly · 16 features
- Admin Management — Centralized team billing + controls.
- Analytics — Team conversion + activity.
- Availability — Schedules + recurring hours.
- Buffers — Before/after meetings.
- Daily / Weekly Limits — Cap bookings.
- Event Types — One-off, group, collective, round-robin.
- HubSpot Integration — Native sync.
- Inline + Popup Embed — Widget for websites.
- Marketing Routing — Form-based routing to teams/reps.
- Meeting Polls — Group availability poll (like When2Meet).
- Paid Bookings — Stripe integration.
- Round-Robin — Distribute across team.
- Salesforce Integration — Native, deep sync (Teams+).
- SSO — Enterprise only.
- Webhooks — Real-time events.
- Workflows — Automated reminders + follow-ups.
Clerk · 15 features
- Account Portal — Hosted sign-in/user profile pages at accounts.yourapp.com — zero UI code, fully …
- Bot Protection — Cloudflare Turnstile CAPTCHA integrated into sign-up.
- Clerk Billing — Built-in Stripe-powered billing: subscriptions, plans, proration — ties directly…
- Enterprise SSO (SAML/OIDC) — SAML and OIDC for enterprise customers. Per-domain connection. Pro+ (1 included)…
- Impersonation — Act as a user from dashboard to debug. Logged.
- JWT Templates — Custom JWT issuance for third-party backends (Supabase, Hasura, Firebase, Convex…
- Machine Tokens (M2M) — API keys and machine tokens for service-to-service auth in addition to user sess…
- Multi-Factor Auth — TOTP (authenticator apps), SMS OTP, backup codes. Forced or optional per user.
- Organizations (B2B) — Multi-tenant orgs with roles, permissions, invitations, domain allowlist, and pe…
- Passkeys (WebAuthn) — Passwordless passkey sign-in with per-device biometrics.
- Prebuilt Components — Drop-in React components: <SignIn/>, <SignUp/>, <UserButton/>, <OrganizationSwit…
- Sessions — Server-side session tokens. Sliding expiration by default; configurable absolute…
- User Management — Full user CRUD, metadata (public/private/unsafe), email/phone verification, ban/…
- Waitlist Mode — Collect sign-ups before opening the app. Approve waitlist entries to activate ac…
- Webhooks — Events: user.created/updated/deleted, session.created, organization.* — delivere…
Developer interfaces
| Kind | Calendly | Clerk |
|---|---|---|
| SDK | — | @clerk/astro, @clerk/backend / @clerk/clerk-sdk-node, @clerk/chrome-extension, @clerk/clerk-expo, @clerk/clerk-js (vanilla), @clerk/clerk-react, @clerk/clerk-react-native, @clerk/nextjs, @clerk/nuxt, @clerk/remix, clerk-sdk-go, clerk-sdk-python, clerk-sdk-ruby, @clerk/tanstack-start, @clerk/vue |
| REST | Calendly REST API | Backend REST API, Frontend API |
| MCP | — | Clerk MCP |
| OTHER | Calendly App, Calendly Embed Script, Calendly Webhooks, Chrome Extension, Zapier Integration | Webhooks (Svix) |
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