Callum

About Callum

Callum is an AI calendar assistant built for teams that use Google Calendar. It lets you schedule, reschedule, and manage multi-person meetings using natural language instead of manual calendar admin. The product is available on Web and iOS, with Slack and ChatGPT integrations coming soon.

Review

Callum focuses on easing the pain of coordinating group meetings, shared availability, and time zone differences. It layers AI on top of an existing calendar to handle scheduling tasks and reduce the email or chat back-and-forth typically required to find meeting times.

Key Features

• Natural-language scheduling and rescheduling for team meetings.
• Awareness of multi-person availability and real scheduling constraints (time zones, overlaps).
• Integration options to enrich scheduling with CRM, ATS, and CSM data.
• Multi-platform access: Web and iOS now; Slack and ChatGPT integrations planned.

Pricing and Value

Callum is offered for free at launch. The core value lies in reducing calendar administration and saving time for teams that regularly coordinate multi-person meetings. Organizations should evaluate the current free offering for their needs, keeping in mind that expanded integrations or enterprise features may be introduced later as paid plans.

Pros

• Makes scheduling conversational, which cuts down on manual clicks and messages.
• Handles group availability and time zones better than one-to-one booking links.
• Connects with other business apps to add context to scheduling decisions.
• Simple, accessible on web and mobile; additional integrations are on the roadmap.

Cons

• Currently centered on Google Calendar; full Outlook support is not yet available.
• Slack and ChatGPT integrations are planned but not live at launch.
• Requires granting calendar and app access, so teams should review permissions and privacy settings before enabling integrations.

Callum is a good fit for teams that use Google Calendar and frequently coordinate group meetings across time zones or departments-product teams, recruiting, sales, and customer success teams are likely to benefit most. Organizations that rely strictly on Outlook or need immediate Slack/ChatGPT integrations should confirm roadmap timing before committing.

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