C
Callum
Callum is an AI calendar assistant for teams that uses natural language to schedule, reschedule, and manage meetings on Google Calendar.
Our verdict
Who it's for
Your AI calendar assistant: manage your schedule with natural language and intelligent automation.
Who should look elsewhere
Currently limited to Google Calendar, no Outlook or other calendar support
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 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
Pricing
| Plan | Price | Billing | Notes |
|---|---|---|---|
| Free | $0 | month | Natural-language scheduling; Google Calendar integration; Basic team scheduling |
| Pro | — | month | Advanced team coordination; Priority scheduling; Slack integration |