Diagnostic question
The main benefit, in users' words
Finds the main benefit users who love the product say they get, and what would improve it for near-lovers.
Value
Plain label: main benefit question
What is the main benefit that users who love the product say they get, and what would make it better for those who only somewhat like it?
Sources
How Superhuman built an engine to find product-market fit · First Round Review (Rahul Vohra), 2018
Benchmark confidence B. A reputable dataset.
Book content is paraphrased, never quoted at length. Last verified October 24, 2026.
Your product
Find the stage your product is stuck in
Gamify It reads your product, picks the one move that matters at its stage, and sizes the test to your traffic. Connecting is free; a Pro subscription starts it.