Built by MIT engineers who lost a deal to scheduling

Group scheduling
sucks less.

Other tools were built for one person sharing availability with one other person. WonderCal was built for groups — 3 to 50+ — and finds the one time that actually works. In one click.

No polls · No email chains · Real calendar sync
Scheduling Sorcery
5 participants
Mon
Tue
Wed
Thu
Fri
9am
10am
11am
12pm
1pm
2pm
3pm
4pm
3 perfect slots found
Tue 1pm — 2pm
Wed 2pm — 3pm
Thu 11am — 12pm
Busy All free Lunch Partial
47
emails sent before the meeting was scheduled
11
days of back-and-forth for one hour
$200k
deal lost to scheduling friction
The Problem

We tried every tool. Calendly. Doodle. Google Calendar. None of them worked.

They were built for one person sharing availability with one other person. The moment you needed three, four, or five people in the same room — total chaos.

Anya <anyam@acme.com>
Hey team, the Axiom folks want a product demo. Can we find 30 min this week?
Carlos <carlos@acme.com>
Wednesday afternoon I'm at the dentist. Thursday 2pm?
Priya <priya@acme.com>
Thursday at 2 I have a standup. Could we do 3pm instead?
Jordan <jordan@acme.com>
3pm Thursday I'm presenting to the exec team. What about Friday?
Anya <anyam@acme.com>
Friday works. 10am? Or is that too early for the Axiom team? They're Pacific time.
3 more days of this. Eventually the deal dies.

The Axiom team bought from a competitor before we ever got on the same call.

Built for groups. Actually built for them.

Scheduling Sorcery

Drop in your participants and WonderCal's algorithm finds the times that actually work for everyone. Three people or thirty — same magic.

  • Works with any group size — mark participants required or optional
  • Smart overlap detection finds optimal slots instantly
  • Guests join via magic link — no signup required
J
Jordan
A
Anya
C
Carlos
P
Priya
Overlap
Tue 2pm works for all 4
Connected Calendars
Live sync
9:00
Focus Time
10:00
Team Standup
11:00
Design Review
12:00
Lunch
1:00
Available
2:00
Can move
Focus protected
Real-time sync

Calendar Overrides

Your calendar adapts to your priorities. Connect Google Calendar or Outlook and let WonderCal see your real availability in real time.

  • Protect focus time, lunch, and personal blocks
  • Auto-bump non-critical events to unblock better slots
  • Per-user defaults with per-meeting overrides

AI-Native

WonderCal is built for the AI era. Our MCP server gives Claude and other AI assistants 25 scheduling tools. Your AI can check availability, find overlaps, and book meetings — through natural conversation.

  • 25 MCP tools for Claude and other AI assistants
  • Full REST API with OpenAPI spec
  • Webhook support and rate-limited API keys
Claude via MCP
Schedule a 30-min sync with the customer and our design team next week
Found 4 slots that work for all 5 participants. Tuesday 2pm has the best overlap.
Book it.
Done. Invites sent to all 5 participants.
Why we built this

The scheduling problem wasn't theoretical.
It cost us a deal.

We were building Digital Wisdom — an AI coaching platform — and spending half our days selling it. Every sales conversation ended the same way: "Let's get a demo on the calendar." What should have taken 30 seconds became a week-long email chain.

We tried every scheduling tool on the market. They were fine for one-on-one meetings, but the moment you needed three, four, or five people in the same room — total chaos. Polls nobody answered. Links that expired. Calendar invites that got lost.

The final straw: a critical partnership meeting. Six stakeholders across three companies and four timezones. It took 47 emails and 11 days to find a single hour that worked. By the time we finally met, the urgency was gone. And so was half the deal.

"Group scheduling is its own job. It needs its own tool."

TK
Tevye Krynski
Co-founder, MIT PhD in AI
JG
Dr. Jessica Gold
Co-founder, MIT / Berkeley PhD

From chaos to booked in minutes

01

Connect Your Calendar

Link your Google Calendar or Microsoft Outlook. We'll securely access your availability without seeing private details. Mix and match providers.

02

Invite Participants

Add team members or external guests. They get a magic link — no signup required. Connect their calendars or set availability manually.

J
A
C
P
+3
03

Find Perfect Times

WonderCal analyzes everyone's availability across every connected calendar and suggests the best meeting times for your group.

Tue 2pm All 5 free
Wed 3pm 4 of 5 free
Thu 10am 4 of 5 free
04

Book and Confirm

Pick your preferred time and we'll automatically send calendar invites to everyone — with video links, descriptions, and reminders.

Confirmed. Invites sent to all 5.
2 min
Average setup time
85%
Time saved on scheduling
99.9%
Uptime guarantee

More than two calendars should not mean more than two weeks of coordination.

WonderCal checks everyone's calendar — Google or Outlook — and finds the one time in one click. Group scheduling for teams, sales orgs, masterminds, and anyone who's done herding cats.

WonderCal was built because we lived through the problem. Not because we read about it in a market report.