StackFlight / Proof Calls

Know what to build.
Ask your customers.

StackFlight turns real customer conversations into evidence-backed decisions about what to build, change, or stop.

Try three calls free See an example
Three free calls. No credit card. Customers join with a link.
Example reportIllustrative conversation
Assumption under test

Agency owners lose enough time chasing invoices to pay for a better workflow.

Customer · 14:08“Send me the payment link. We can start with one client on Monday.”
Commitment $100 pilot accepted
DecisionProceed narrowly
Evidence linked to the conversation.

How it works

One call.
A clearer decision.

Go beyond meeting notes. Understand the problem, the commitment, and the evidence behind your next move.

  1. 01

    Set a question

    Choose what you need to learn and what would count as real commitment.

  2. 02

    Have a conversation

    Share a private call link. Your customer joins in their browser, with consent before transcription.

  3. 03

    Know your next step

    Review the evidence, the customer's commitment, and what to test next.

Simple pricing

Less guessing.
More evidence.

Start with three free calls. When you need more, choose monthly or annual access.

Proof CallsMonthly or annual
$29/ month

or $290 billed annually

  • Private customer call rooms
  • Live transcription
  • Evidence-backed verdicts
  • Commitment tracking across calls
Start free Secure subscription billing through Whop. Customers join free and need no account.