Compare CalStack
Feature by feature and price by price, with sources from each vendor's own site.
CalStack vs Calendly
Calendly is best for individuals and teams who want a widely known scheduling link that works with any calendar and video tool.
CalStack vs Cal.com
Cal.com is best for teams that want a broad scheduling platform with a generous free plan and enterprise controls.
CalStack vs Chili Piper
Chili Piper is best for revenue teams of 15 or more on Salesforce or HubSpot who want deep routing and are ready for a yearly contract.
CalStack vs HubSpot Meetings
HubSpot Meetings is best for teams that already run their sales in HubSpot and want meetings logged in the CRM.
CalStack vs SavvyCal
SavvyCal is best for people who send scheduling links by hand and want the booking experience to feel personal.
CalStack vs Acuity Scheduling
Acuity Scheduling is best for service businesses that sell appointments, classes and packages and take payment at booking.
CalStack vs RevenueHero
RevenueHero is best for B2B teams that route leads from their existing forms using CRM data, and pay only for reps who get meetings.
The differences that matter most
| Feature | CalStack | Calendly | Cal.com | Chili Piper | HubSpot Meetings | SavvyCal | Acuity Scheduling | RevenueHero |
|---|---|---|---|---|---|---|---|---|
| Free plan | Yes3 booking pages, 1 seat | Yes1 event type, 1 calendar | Yes1 user, unlimited event types | NoDemo only, no trial listed | YesOne-on-one page | NoFree to try, paid to use | No7-day trial | No14-day trial |
| How seats are priced | Flat: up to 15 seats on Team | Per seat | Per user | Yearly platform fee, 15 seats included | Per seat | Per user | By plan: 1, 6 or 36 calendars | Platform fee plus per user |
| Qualifying questions before the calendar | Yes | PaidTeams, with routing forms | PaidTeams, with routing forms | PaidFrom your own web forms | Not confirmed | Not confirmed | Not confirmed | PaidFrom your own web forms |
| Send leads to the right place based on their answers | PaidTeam plan | PaidTeams plan | PaidTeams plan; by attributes on Organizations | PaidRouting & Scheduling | Not confirmed | Not confirmed | Not confirmed | PaidInbound Essentials |
| Side panel inside Google Meet | Yes | Not confirmed | Not confirmed | Not confirmed | Not confirmed | Not confirmed | Not confirmed | Not confirmed |
| Outlook and Microsoft 365 calendars | No | YesOutlook, Microsoft 365, Exchange | YesAlso Apple and Zoho | PaidAll plans | YesOffice 365 | PaidOffice 365 | PaidAlso iCloud and Exchange | Not confirmed |
| Zoom and Microsoft Teams | No | YesAlso Webex and GoTo | YesAlso Cal Video | Not confirmed | Yes | PaidAlso Whereby | PartialZoom and GoTo Meeting listed | Not confirmed |
| Built-in CRM sync | NoThrough Zapier, n8n or webhooks | PaidHubSpot on Standard, Salesforce on Teams | YesHubSpot and Salesforce, two-way | PaidSalesforce and HubSpot | YesIt is HubSpot's CRM | Not confirmed | Not confirmed | PaidHubSpot, Salesforce, Zoho |
Questions and answers
- How are these comparisons made?
- Every competitor fact links to that vendor's own pricing page or help center, and each page shows the date it was checked. A feature we couldn't confirm is left out of the table.
- What is CalStack best at?
- Booking qualified calls from your website and running them in Google Meet: questions before the calendar, team routing, AI call prep and a side panel inside the call, for one flat price.
- What doesn't CalStack do yet?
- It works with Google Calendar and Google Meet only, has no built-in CRM sync, doesn't take payments or send reminders, and its booking pages are in English.
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