Pricing Units, Proprietary Limits & Migration Complexity
The operational fine print U.S. SaaS founders and small business owners check before committing.
| Evaluation Dimension | Cal.com | Kolab Now |
|---|---|---|
| Starting Price & Billing Unit How your monthly bill scales | Free / $12/mo Teams (per seat) Appointment Scheduling & Booking Seat / Plan | Free / $14/mo Business Cloud Plan Appointment Scheduling & Booking Seat / Plan |
| Free Tier & Included Quotas Sandbox vs production allowance | Cal.com is self-hostable (Open Source (AGPLv3)) with managed Teams (per seat) cloud starting at $12/mo | Kolab Now Free / Starter Plan tier (core appointment scheduling & booking capabilities); Business Cloud Plan upgrades start at $14/mo |
| Proprietary Limits & Gotchas Caps, lock-in & overage cliffs | Cal.com tier notes — Custom Domain Support: Full white-label domain support; Full API & Webhooks: Complete REST API & webhooks included | Kolab Now tier notes — Flat-Rate Small Business Pricing: Transparent SMB pricing; Full API & Webhooks: Cloud API & integrations |
| Migration Complexity Engineering & ops switching effort | Low (< 30 mins) Configure Cal.com (Custom Domain Support, Full API & Webhooks, Native Dark Mode) and import existing appointment scheduling & booking records | Low (< 30 mins) Configure Kolab Now (Flat-Rate Small Business Pricing, Full API & Webhooks) and import existing appointment scheduling & booking records |
| Target Company Stage Best operational fit | Solo Founders & Appointment Scheduling & Booking SMBs | Solo Founders & Appointment Scheduling & Booking SMBs |
| Data Privacy & Compliance U.S. & enterprise governance | Open Source / Self-HostGDPR / CCPA ReadyCustom Domain Support | GDPR / CCPA ReadyFlat-Rate Small BusinessTransparent USD Pricing |
Interactive Team Seat & ROI Simulator
Adjust your team headcount to compare real monthly and annual licensing costs.
Cal.com: Appointment Scheduling & Booking Seat / Plan
Kolab Now: Appointment Scheduling & Booking Seat / Plan
Estimated Annual Savings with Cal.com: $120/yr
Saves ~14% annually at this workload tier based on published USD rates.
Technical Capability Matrix
Side-by-side feature, API, and data-ownership checklist.
| Feature Specification | Cal.com | Kolab Now |
|---|---|---|
| Custom Domain Support branding | Supported Full white-label domain support | Not Included |
| Full API & Webhooks developer | Supported Complete REST API & webhooks included | Supported Cloud API & integrations |
| Native Dark Mode ui | Supported Native dark mode booking pages | Not Included |
| No Vendor Lock-In data-ownership | Supported Own your booking infrastructure | Not Included |
| Self-Hostable / Open Source infrastructure | Supported Full open-source repository on GitHub | Not Included |
| Flat-Rate Small Business Pricing pricing | Not Included | Supported Transparent SMB pricing |
Official Published USD Pricing Tiers
Verified plan structure for Cal.com and Kolab Now.
Cal.com Plans USD Verified
Free for Individuals (Unlimited Events)
monthly
Teams (per seat)
monthly
Kolab Now Plans USD Verified
Free / Starter Plan
monthly
Business Cloud Plan
monthly
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Frequently Asked Questions
Key pricing, quota, migration, and security answers for Cal.com vs Kolab Now.
What is the main difference between Cal.com and Kolab Now in 2026?
Cal.com (Free / $12/mo Teams (per seat), billed by appointment scheduling & booking seat / plan) is best suited for: Open-source scheduling infrastructure for everyone By contrast, Kolab Now (Free / $14/mo Business Cloud Plan, billed by appointment scheduling & booking seat / plan) is best for: Alternative to Gmail, Yahoo! Mail, Microsoft Outlook — Manage email, calendars, contacts, tasks, and files securely with
How do Cal.com and Kolab Now compare on free tiers and USD pricing?
Cal.com: Cal.com is self-hostable (Open Source (AGPLv3)) with managed Teams (per seat) cloud starting at $12/mo. Kolab Now: Kolab Now Free / Starter Plan tier (core appointment scheduling & booking capabilities); Business Cloud Plan upgrades start at $14/mo. Always compare based on your real workload metric (Appointment Scheduling & Booking Seat / Plan vs Appointment Scheduling & Booking Seat / Plan) rather than headline base tier alone.
What proprietary feature limits or overages should founders watch out for?
On Cal.com: Cal.com tier notes — Custom Domain Support: Full white-label domain support; Full API & Webhooks: Complete REST API & webhooks included. On Kolab Now: Kolab Now tier notes — Flat-Rate Small Business Pricing: Transparent SMB pricing; Full API & Webhooks: Cloud API & integrations.
How difficult is migrating from Kolab Now to Cal.com, and what compliance is supported?
Estimated migration effort to Cal.com is Low (< 30 mins) (Configure Cal.com (Custom Domain Support, Full API & Webhooks, Native Dark Mode) and import existing appointment scheduling & booking records). Security & data governance signals for Cal.com include Open Source / Self-Host, GDPR / CCPA Ready, Custom Domain Support, while Kolab Now offers GDPR / CCPA Ready, Flat-Rate Small Business, Transparent USD Pricing.
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