Book customer interviews this week

This week’s customer interviews, on your calendar.

Real conversations about their work, never a pitch.

Download RiverHow to start

How it works.

River finds people who can test your riskiest guess, sends each a short personal invitation from your Gmail, books 20-minute calls and turns every conversation into evidence in one Sheet.

  1. Say what you need to learn

    Your riskiest guess, who can answer it and how many calls, suggested by River.

  2. River invites the right people

    Users, stalled trials and strangers who fit, each told why they were chosen.

  3. Calls booked, answers logged

    After each call, the problem, workaround and their words land in your Sheet.

What you get.

  • Interviews booked on your calendar through a link you never had to set up
  • A one-page guide built on YC’s five questions, for mid-call
  • An Interviews Sheet: problem, last time it happened, workaround, quote, commitment
The finished result of Book customer interviews this week in River

Start in three steps.

  1. River’s app icon

    Get River

    Download the app for your computer.

  2. River’s first question, “What’s your role?”, with Founder chosen

    Sign up as a founder

    When River asks your role, choose Founder.

  3. Start “Book customer interviews this week”

    Press + in your Dock, open Playbooks, and press Start. River reads your site, calls and Stripe to suggest the riskiest guess to test.

A few things to know.

What do I ask on the calls?

YC’s five questions: the hardest part of the job, the last time it happened, why it was hard, what they’ve done about it and what they don’t love about what they’ve tried.

Should I interview friends?

Friends answer fastest but can be less honest, so River mixes in strangers who fit. Compliments don’t count as evidence; time, an intro or money does.

What does it cost?

It uses your plan’s AI credit, like everything else in River. Bookings land on River’s own calendar, with nothing to connect.

View pricing

More for founders.

All founder playbooks

Try it on your own work.

Download River, choose Founder, and press Start on “Book customer interviews this week”.

Download RiverSee every playbook