Cal.com
Relay.app
| Feature | Cal.com | Relay.app |
|---|---|---|
| Pricing | Free / from $12/mo | Free / from $16/mo |
| Free Plan | ✓ Yes | ✓ Yes |
| Rating | 4.4 / 5 | 4.3 / 5 |
| Best For | developers, startups, agencies, privacy-conscious-teams | operations-teams, agencies, small-businesses, compliance-teams |
| Founded | 2021 | 2021 |
| Scheduling | ✓ | ✗ |
| Self Hosting | ✓ | ✗ |
| Api | ✓ | ✗ |
| Webhooks | ✓ | ✗ |
| Round Robin | ✓ | ✗ |
| Collective Scheduling | ✓ | ✗ |
| Embed | ✓ | ✗ |
| Workflow Builder | ✗ | ✓ |
| Ai Steps | ✗ | ✓ |
| Human Approvals | ✗ | ✓ |
| Multiplayer Editing | ✗ | ✓ |
| Integrations | ✗ | ✓ |
| Conditional Logic | ✗ | ✓ |
✓ Cal.com Pros
- Open-source and self-hostable
- Unlimited event types on free plan
- Full API and webhook access
- White-label and embed options
✗ Cal.com Cons
- Self-hosting requires technical setup
- Fewer integrations than Calendly
- UI less polished than Calendly
✓ Relay.app Pros
- Human-in-the-loop approvals
- AI steps built in
- Collaborative workflows
- Clean modern interface
✗ Relay.app Cons
- Fewer integrations than Zapier
- Newer platform
- Limited advanced logic
The Verdict
Cal.com is built for developers and startups, with a focus on scheduling and self-hosting. Relay.app targets operations teams and agencies and leads with workflow-builder and ai-steps.
Pricing is close: Cal.com starts at $12/mo versus $16/mo for Relay.app — not a deciding factor on its own.
Both offer free plans, so you can test each with your real workflow before committing to a subscription.
Feature-wise, Cal.com offers broader built-in capabilities (7 features vs 6), while Relay.app takes a more focused approach — which can mean a simpler, faster onboarding experience.
Both tools are a solid fit for agencies — in those cases, the decision often comes down to workflow style and how your team prefers to organize work.
This is a genuinely close comparison. If you can, sign up for both free trials (where available) and run a one-week test with your actual team tasks before deciding.