Callum
UnclaimedYour AI calendar assistant: manage your schedule with natural language and intelligent automation.
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What is Callum?
Callum is a calendar tool. Callum is an AI calendar assistant for teams that uses natural language to schedule, reschedule, and manage meetings on Google Calendar. It understands multi-person meetings, shared availability, and real-world scheduling constraints like time zones, buffer times, and recurring patterns. Key capabilities: Natural-language meeting scheduling and rescheduling, Multi-person availability detection across Google Calendar, Time zone awareness and buffer time management, Team-wide calendar coordination without back-and-forth emails, Web and iOS apps with Slack integration planned. Callum ships a free plan plus paid tiers that unlock as usage grows. Buyers most often compare Callum against Reclaim, SkedPal, Cron.
TL;DR - Callum
- AI calendar assistant that schedules and manages team meetings via natural language
- Handles multi-person availability, time zones, and buffer times on Google Calendar
- Available on web and iOS — replaces back-and-forth scheduling emails
Pricing: Free plan available
Best for: Growing teams
Pros & Cons
Pros
- Eliminates back-and-forth scheduling emails with natural-language commands
- Understands team dynamics like shared availability and scheduling constraints
- Time zone handling prevents cross-timezone meeting conflicts
- Simple interface on web and iOS for quick scheduling
Cons
- Currently limited to Google Calendar — no Outlook or other calendar support
- Slack and ChatGPT integrations are planned but not yet available
- May struggle with complex recurring meeting patterns
Key Features
Natural-language meeting scheduling and reschedulingMulti-person availability detection across Google CalendarTime zone awareness and buffer time managementTeam-wide calendar coordination without back-and-forth emailsWeb and iOS apps with Slack integration planned
Pricing Plans
Free
Free
- Natural-language scheduling
- Google Calendar integration
- Basic team scheduling
Pro
- Advanced team coordination
- Priority scheduling
- Slack integration
- Unlimited team members
About Callum
By Toolradar Team·
Callum is an AI calendar assistant for teams that uses natural language to schedule, reschedule, and manage meetings on Google Calendar. It understands multi-person meetings, shared availability, and real-world scheduling constraints like time zones, buffer times, and recurring patterns. Instead of back-and-forth emails or manual calendar admin, team members describe what they need and Callum handles the coordination. Available on web and iOS with Slack and ChatGPT integrations planned.
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Callum FAQ
What is Callum?
Callum is an AI calendar assistant for teams that uses natural language to schedule, reschedule, and manage meetings on Google Calendar. It understands multi-person availability, time zones, and scheduling constraints.
Which calendars does Callum support?
Callum currently integrates with Google Calendar. Outlook and other calendar support may be added in the future.
How is Callum different from Calendly?
Calendly shares availability links for external scheduling. Callum uses natural language to handle internal team scheduling — you describe what you need and it coordinates multi-person meetings automatically without booking links.
Source: getcallum.com