What is Callum?

Callum is an AI calendar assistant built specifically for teams using Google Calendar. It understands the complexity of multi-person meetings, shared availability, and real-world scheduling constraints that often make calendar management a headache. Instead of juggling back-and-forth emails or manually checking everyone’s free time, you simply use natural language to schedule, reschedule, and manage meetings. Callum can also be enhanced by connecting your CRM, ATS, or CSM apps, making it smarter about who you meet and why. It’s available on Web, iOS, Slack, and soon on ChatGPT.

Who it's for

• Busy team leads who need to coordinate meetings across multiple people without endless email chains.
• Sales and customer success professionals who want to sync meetings with CRM data and avoid double-booking client calls.
• Remote and hybrid teams that rely on Google Calendar and need a frictionless way to find shared availability across time zones.

Key features

Natural language scheduling

Tell Callum what you need in plain English — like “schedule a 30-minute call with Sarah next Tuesday afternoon” — and it handles the rest. No forms, no clicking through time slots.

Multi-person availability logic

Callum understands that a meeting isn’t just about you. It checks everyone’s calendars, respects their working hours, and finds the best common slot without you having to ask each person individually.

App integrations for smarter context

Connect your CRM, ATS, or CSM to give Callum background on contacts and deals. This means it can prioritize meetings based on account importance or stage in your sales pipeline.

Cross-platform access

Use Callum on the Web, iOS, or directly inside Slack. ChatGPT integration is coming soon, so you’ll be able to manage your calendar from even more places.

What stands out

“Callum understands real-world scheduling constraints, not just free/busy blocks.”

Most calendar tools only show empty slots. Callum goes deeper — it factors in meeting purpose, attendee roles, and connected app data to suggest times that actually make sense. It’s not just an automation tool; it’s a scheduling partner that reduces the cognitive load of coordinating teams.

Worth checking out if…

You rely on Google Calendar and find yourself spending too much time on the logistics of scheduling. If your team deals with frequent reschedules, multi-person meetings, or you want your calendar to be context-aware (thanks to CRM/ATS/CSM connections), Callum is a strong fit. It’s especially useful for sales, customer success, and team leads who value speed and simplicity over manual calendar admin.