As of 29 Oct 2026, the panel rates Cal.com 3.5/5 and Calendly 3.5/5 in Appointment Scheduling. Weighted by what each judge cares about, 4 of the 6 judges pick Cal.com and 2 pick Calendly. Cal.com scores higher on 4 of 7 criteria (Integrations, API & data export, Booking page & client experience, Calendar sync & availability rules, plus 1 more). Calendly scores higher on 2 of 7 criteria (Team, staff & location scheduling and Pricing transparency). Provenance — Cal.com: Rest of world, United States; Calendly: Rest of world. Ratings are the AI panel’s opinion, formed from public evidence: how scores are made.
Cal.com and Calendly split this bench rather than settle it. Calendly takes team scheduling, 9.2 to 8.0 — 6 judges lean Calendly, 0 tie — on configurable round-robin distribution, routing on Salesforce ownership, SSO/SAML, SCIM provisioning and an audit log. Cal.com takes integrations and data, 8.8 to 7.7, 5 judges lean Cal.com, on a documented v2 API, webhooks across 31 trigger types and two-way Salesforce and HubSpot sync. Sovereignty ties at 4.0, 0 lean either way, 6 tie: both list a US legal entity jurisdiction; Cal.com's pages state US processing with EU residency only on contact, and we found no public information on EU hosting for Calendly. Pricing transparency is 5.7 versus 5.8; booking 6.7 versus 6.3, calendar 6.7 versus 6.5, reminders 6.2 versus 6.0. The reported weighted totals split evenly — Calendly 7.5 to 7.1 and 6.4 to 6.3, Cal.com 6.6 to 6.4 and 6.4 to 6.2 — no overall winner.
Choose Cal.com if
You need to build scheduling into your own systems on a documented v2 API with webhooks across 31 trigger types — integrations and data scored 8.8 versus 7.7, with 5 judges leaning Cal.com.
Your team needs two-way Salesforce and HubSpot sync plus self-serve export of customer data at any time, both cited in Cal.com's integrations and data verdict.
You want open-source scheduling infrastructure you can self-host, as the verdict describes Cal.com.
You need EU data residency even if arranged by contact: Cal.com's pages state EU residency on contact, with a data processing agreement on every account, standard contractual clauses and an EU representative in Germany, while we found no public information on EU hosting for Calendly.
Your buyer profile matches the consultant or the data protection officer — their weighted totals went to Cal.com, 6.6 to 6.4 and 6.4 to 6.2.
Choose Calendly if
You need round-robin scheduling with a configurable distribution method and CSV-exportable distribution statistics — team scheduling scored 9.2 versus 8.0, with 6 judges leaning Calendly and 0 tie.
Your sales team routes inbound leads on Salesforce ownership, which Calendly's routing forms support per the verdict.
You need SSO/SAML, SCIM provisioning and an audit log for IT review, all named in Calendly's team scheduling verdict.
You are a sales team lead — that judge's weighted total went to Calendly, 7.5 to 7.1.
You want published pricing at Standard $10 /seat/mo and Teams $16 /seat/mo billed yearly — pricing transparency's only judge lean went to Calendly (5.8 versus 5.7).
Read this comparison as one judge. Each weighs the same scores by what they care about.
The Practice Owner
Runs a physiotherapy practice with six therapists, two treatment rooms that must not be double-booked, and a front desk that spends its mornings on the phone. Wants patients to book and reschedule online, SMS reminders that cut the no-shows, rooms and therapists checked together, and patient data that stays in Europe under a data processing agreement the practice can show.
Cal.com
This judge's pick
Calendly
Criterion by criterion
Booking page & client experience
Cal.com
Patients can book and reschedule without phoning us: event types carry their own duration and location, custom booking questions appear on the booking page, and confirmations let bookers reschedule with ease. Four embed formats put booking on our own website, embeds are stated to be responsive and mobile-optimized, and the widget can be white-labelled so our brand leads. We found no public information on class bookings with seat limits or booking pages in several languages.
Calendly
Event types carry their own durations, booking questions like a phone field can be added, returning patients' details can be remembered, the page embeds on our website with matching colors, time zones are detected for both sides, and cancel/reschedule links go out in invitations and reminders. Group and one-to-one bookings both exist and an event can be set to another language. We found no public information on seat limits for group events, on removing the vendor's branding, or on accessibility of the booking flow, so it stays short of a finished storefront with intake forms or patient accounts.
Calendar sync & availability rules
Cal.com
The availability rules are genuinely deep — buffers before and after, a minimum notice period, booking frequency and horizon limits, daily, weekly or monthly caps, and date overrides to block a specific day — with Google, Microsoft Outlook, Apple/CalDAV and Zoho calendars connected through free/busy data so existing booked times feed availability. That covers my therapists' diaries well. We found no public information on rooms or equipment that must be free alongside a person, which for my two treatment rooms is the make-or-break question.
Calendly
Connected Google, Office 365/Outlook.com and Exchange calendars are checked for busy times and new bookings written back to them, up to six per person on paid plans, with preferred hours, buffers, minimum notice, date ranges and daily-to-monthly meeting limits all documented. For my two treatment rooms the gap is decisive: we found no public information on rooms or equipment that must be free alongside the therapist, nor on iCloud or CalDAV sync.
Team, staff & location scheduling
Cal.com
Round-robin distributes bookings across a team by availability, weights or priority rules, and collective and managed event types exist, so six therapists can share workload fairly without the front desk routing calls. Routing forms send a booking to the right person based on form answers, team admin and owner roles gate who creates or changes team event types, and the Organizations tier adds SAML SSO and SCIM with role-based permissions. We found no public information on several locations each with their own staff.
Calendly
Round-robin events auto-assign the next available host with a configurable distribution method, per-host schedules and locations, collective events, routing forms that direct a patient by their answers, owner and admin roles, and a CSV showing how meetings were distributed across the team. Enterprise layers on SSO with SAML, SCIM provisioning, audit logs, domain control and Salesforce lookup routing driven by account, contact or lead ownership. Close to a full team system.
Reminders, payments & no-show protection
Cal.com
Automated workflows send email, SMS or WhatsApp reminders minutes, hours or days before the appointment, with custom templates and triggers on confirmation, cancellation and reschedule — this is precisely what would cut my no-show rate. Payments are configured per event with a custom price, currency and a setting for when to charge; the captured pages give different figures for payment providers (the payments tab says "we only support payments via Stripe", the pricing page lists Stripe and PayPal). We found no public information on enforced cancellation deadlines, late-cancellation or no-show fees, or a waiting list that refills a freed slot.
Calendly
Email and text reminders before and after events with customizable subject and body from the Standard plan, SMS running through Twilio, and payments at booking through Stripe and PayPal including a worked example of a client paying a $150 deposit upfront. But the cancellation policy is only displayed — the help pages state it doesn't restrict cancellations or reschedules based on the policy — and we found no public information on no-show or late-cancellation fees or a waiting list that refills cancelled slots.
Integrations, API & data export
Cal.com
A documented v2 API with Bearer-key auth and OAuth scopes covers webhooks (31 trigger types, including booking, payment and no-show events), routing forms, teams and conferencing, plus an embeddable atoms SDK and a self-hosted open-source option under the MIT licence — that is rare flexibility. Zoom, Google Meet, Microsoft Teams and Cal Video links are created automatically, and Salesforce, HubSpot and Pipedrive sync, Zapier and an app store of 100+ apps are named. Customer data export is available any time, self-serve, with at least a 30-day export window after termination; we found no public information on published API rate limits.
Calendly
A documented public API with OAuth and personal access tokens, real-time webhooks with a signing key covering scheduled events, invitee answers including custom questions, contacts and routing submissions, named connections to HubSpot, Salesforce, Mailchimp, Marketo, Pardot, Dynamics, Zapier, Stripe, PayPal, Zoom, Google Meet and Teams, and CSV exports of routing responses and round-robin statistics. We found no public information on published rate limits, an SDK, or a self-hosting or stated migration option.
European sovereignty
Cal.com
The contracting party is Cal.com, Inc., a Delaware corporation in San Francisco, and the privacy policy states data is processed in the United States, with EU data residency offered only as "contact us at privacy@cal.com" — so I cannot show my patients a European-hosted chain by default. The GDPR machinery is real and public: a data processing agreement binding every account, a subprocessor list at trust.cal.com covering hosting, email, SMS, video and payments, EU Standard Contractual Clauses with the UK Addendum and Swiss amendments, Data Privacy Framework certification, a named EU representative in Germany, and ISO 27001 and SOC 2 Type II stated. That is well above a bare US privacy policy, but the chain still runs through a US company processing in the US, short of what a European practice needs before entrusting it with who sees a therapist and when.
Calendly
A published data processing agreement with Standard Contractual Clauses, the Irish Data Protection Commission named, a subprocessor list and SOC 2 Type 2 and ISO 27001 certifications exist, which is more than bare paperwork. But the contracting entity is Calendly LLC of Buford, Georgia, processing is stated to occur in the United States and other jurisdictions outside the residence of the data subjects, and the listed chain — Twilio for SMS, Zendesk and Intercom for support, Google for infrastructure and analytics — is essentially all USA, with no EU hosting option on the captured pages. The data processing agreement also states that sensitive personal information and special-category data may not be submitted at all, which is precisely what my patients' physiotherapy records are.
Pricing transparency
Cal.com
Tiers are public with their scaling unit and detailed feature lists — Individuals "Free forever" for 1 user, Teams "YEARLY $12 per user/month Save 25%", Organizations "YEARLY $28 per user/month Save 25%", Enterprise "Custom" on sales — so I can see where round-robin, routing forms, branding removal and SSO land before paying. VAT treatment is stated (business fees exclusive of taxes), billing runs monthly or annual in advance with automatic renewal, and signup needs no credit card. We found no public information on SMS credit costs, payment fees or a separately quoted monthly price, so the real annual cost for six therapists plus reminders stays an estimate.
Calendly
Standard is listed at $10 per seat per month and Teams at $16 per seat per month, both billed yearly with savings of up to 20% advertised, a free tier allows one calendar against six on paid plans, and the terms state month-to-month or 12-month commitments with taxes on the customer. I still cannot compute my real annual cost: we found no public information on the price of SMS reminders beyond Twilio limits per user per month, on payment processing fees, on the Notetaker and Callie add-on, or on the Enterprise tier.
Sovereignty, side by side
Dimension
Cal.com
Calendly
Legal entity
Incorporated in US
Not determined
Hosting location
Not determined
Not determined
Hosting options
Not determined
Not determined
Open source
Not determined
Not determined
Data processing agreement
Not determined
Not determined
Transfer impact assessment
Not determined
Not determined
Facts, side by side
Only facts both products carry under the same definition — anything else would not be a fair row.
As of 29 Oct 2026, the panel rates both 3.5/5. Weighted by what each judge cares about, 4 of the 6 judges pick Cal.com and 2 pick Calendly. Which one fits depends on the criteria that matter to you; the table on this page shows both side by side, and each judge’s reading has its own page. Both were scored by the same AI bench under the same rubric, from public evidence only, as the methodology describes.
Is Cal.com or Calendly European?
Cal.com is not European by provenance (Rest of world, United States). Calendly is not European by provenance (Rest of world). Provenance is read from each company’s own legal pages: who builds it and who owns it.
Do Cal.com and Calendly have a free plan?
As of 29 Oct 2026, both vendors’ own pages state a free plan. Each product page links the pricing page it was read from.