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Clustra Calendar

Freemium#33 of 193 in Calendar Apps

Clustra Calendar: A web-based team scheduler with strong booking workflows and a workspace pricing model. Ranked #33 of 193 in Calendar Apps by our editors (6.0/10); pricing: Free plan · 14-day trial; best for web-based team booking workflows.

6.0/10★★★☆☆Editor score

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At a glance

• Editor score
  6.0 / 10
• Pricing
  Free plan · 14-day trial
• Best for
  Web-based team booking workflows
• Free plan
  Yes
• Paid from
  $8/user/mo
• Facts checked
  22 Sep 2026

• Where it wins

  • Two-way Google and Microsoft calendar synchronization
  • Round-robin routing, intake forms, reminders, and workflows
  • Team availability views with linked meeting notes

• Where it doesn't

  • Web-only platform listing
  • Paid pricing applies at the workspace level
  • Conferencing integrations are not listed

Our verdict on Clustra Calendar

Clustra Calendar is a web-based scheduling application for teams coordinating shared availability. It suits sales, recruiting, support, and other groups that need booking links, round-robin routing, intake forms, reminders, scheduling workflows, and team availability views. Two-way synchronization with Google and Microsoft calendars supports shared scheduling, while time-zone handling, recurring events, and meeting notes linked to events extend the workflow beyond basic appointment booking.

Clustra uses a freemium workspace model. The Free plan is priced at $0 per user per month with annual billing and includes Plan, Notes & DMS, Calendar, community support, and a branded subdomain. Pro costs $10 per user per month with monthly billing or $8 with annual billing, adding all 6 apps, universal search and cross-app links, and priority email support. Business costs $18 monthly or $14 annually per user and adds SSO through SAML or OIDC, SCIM, custom roles, audit logs, retention, workspace insights and analytics, plus Slack and Microsoft Teams notifications. Enterprise adds dedicated infrastructure and data residency, custom contracts, SLAs, security review, a named customer success manager, and 24/7 support.

The broader Clustra workspace combines calendar, project, documentation, data, video, and chat applications, making Pro more relevant for teams that want connected workspace tools rather than a standalone calendar. Google Calendar, Microsoft calendars, Slack, and Microsoft Teams are the listed integrations. The platform listing names web only, so teams prioritizing mobile access or built-in conferencing should consider another option. Clustra Calendar is a strong fit for browser-based booking operations and shared availability; it is less suitable when mobile apps or conferencing connections are central requirements.

Questions about Clustra Calendar

Does Clustra Calendar have a free plan? Yes, there is a free plan; paid plans start at $10/user/mo (Pro).

How much does Clustra Calendar cost? Clustra Calendar lists 2 paid plans; the lowest is Pro at $10/user/mo.

Is there a free trial of Clustra Calendar? Yes: a 14-day free trial; no card is needed.

What does Clustra Calendar run on? Web. It runs in the cloud.

What does Clustra Calendar integrate with? 4 integrations: Google Calendar, Microsoft calendars, Slack and Microsoft Teams.

Who is Clustra Calendar built for? Small businesses, mid-market companies and enterprises (our editorial estimate).

Your product? Our editors can test Clustra Calendar in depth and publish a review, labelled as paid · from $149/mo →

Clustra Calendar pricing

All 4 Clustra Calendar plans and prices →

Clustra Calendar fact sheet

Clustra Calendar integrations

Clustra Calendar lists 4 integrations on its own site.

• Google Calendar
• Microsoft calendars
• Slack
• Microsoft Teams

Alternatives to Clustra Calendar

• Google CalendarA versatile calendar for personal schedules and Google Workspace collaboration.9.4
• Microsoft OutlookA flexible calendar choice for people and teams already working in Microsoft’s ecosystem.9.2
• Zoho CalendarA low-cost calendar with booking, sync, room reservations, and broad integrations.9.1

See all Clustra Calendar alternatives →

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Featured on iTechGuides

Reviewed by iTechGuides Editors · Editorial team · Updated Nov 2026

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Last updated 14 Nov 2026 · How we research and update