Cal.com is a popular open-source scheduling tool — great for developers who want full control. Onbookr is for service professionals who want scheduling, payments, and reminders without managing infrastructure or writing code.
| Feature | Onbookr | Cal.com |
|---|---|---|
| Hosting | Fully managed (SaaS) | Self-hosted or Cal.com Cloud |
| Setup time | Minutes | Minutes (cloud) / Hours (self-hosted) |
| Pricing model | Flat monthly subscription | Free (self-host) / Cal.com Cloud plans |
| Booking commissions | None — keep 100% | None |
| Embeddable widget | Yes — script tag or React | Yes — embed package |
| Automated reminders | Yes — WhatsApp + email | Email; WhatsApp via third-party |
| Payment collection | Built-in | Stripe via app |
| Custom branding | Yes | Yes (white-label on higher tiers) |
| Maintenance required | None | Yes (if self-hosted) |
| Zapier integration | Yes | Yes |
Cal.com's self-hosted version gives you full control, but it also means you're responsible for deployment, uptime, updates, and security patches. Onbookr handles all of that so you can focus on your clients.
Onbookr includes payment collection and automated WhatsApp + email reminders in the core product. With Cal.com, these typically require third-party apps or integrations to configure separately.
Drop Onbookr onto any website with a single script tag — no npm package, no build step. Ideal for service professionals who want to add booking to an existing site without involving a developer.
Onbookr's Individual and Business plans are straightforward flat rates with no per-booking commissions. You keep 100% of what your clients pay you.
