Callum
AI calendar assistant for teams – supercharge your calendar
Callum is an AI calendar assistant built for teams using Google Calendar. It understands multi-person meetings, shared availability, and real-world scheduling constraints. Use natural language to schedule, reschedule, and manage meetings without back-and-forth emails or manual calendar admin. Boost Callum knowledge by connecting your CRM, ATS, CSM apps. Available on Web, iOS, Slack and ChatGPT (soon).
Callum is a Productivity company. It launched on Product Hunt on Jan 22, 2026, with 257 upvotes. Adamlead has 1 person on file at Callum.
Callum timeline
- AI calendar assistant for teams – supercharge your calendar
People at Callum
Emails are shown masked, with whether each one has been verified. They're unlocked in the app with Lifetime access.
| Name | Title | |
|---|---|---|
Maker | – |
Frequently asked questions
Who works at Callum?
Adamlead has 1 person on file at Callum, including Nick Ustinov (Maker). Each email shows whether it has been verified.