Show HN: AI that solves group scheduling – InstantGroups

I built InstantGroups to finally solve the scheduling mess that happens any time three or more people try to meet, especially across teams, companies, and time zones.

The idea came out of pain: At my last company leading growth I was constantly coordinating sales calls with multiple stakeholders, panel interviews, and team planning sessions, and despite shared calendars, nothing worked once multiple busy people were involved. Existing tools fell short for wrangling groups, especially with external participants.

So I built something better.

InstantGroups is an AI group meeting scheduler that: - Collects availability (via calendar integrations, natural language, or even text/email - replies) - Confirms a mutual time with everyone involved - Sends invites + reminders automatically - Follows up intelligently if no time is found on the first pass

No logins are required for guests. No stale availability polling. No manual back-and-forth. Just give it the meeting details and participant list, and InstantGroups takes over from there.

We’ve been testing and it's saving hours per week. Would love feedback, ideas, or thoughts!

You can sign up for the free early access release here: https://instantgroups.ai

Happy to answer any questions.