We hide the answer, run the simulation, and show you both.
Published experiments where real customers were randomly shown different prices. Every dot is a share of those customers. White is what they did. Teal is what Precheck said they would do.
Predictive accuracy has not been established. These were not Precheck customers.
Monthly subscription to an online job board
United States, 2015. 7,867 small businesses, each randomly shown one of ten prices at the paywall.
What real customers did
24%
What Precheck simulated
21%
3 points apartat this price. One cell is one percent of customers.
Every price tested, cheapest on the left. Same direction means the order was right.
Round one · 20 September 2026
We ran Precheck blind against four real pricing experiments. Here is what happened.
Four published experiments where real customers were randomly shown different prices. We gave our simulation the situation, hid the answer, and compared. It ranked the prices correctly in eight of nine runs. It got the share of buyers badly wrong twice. Both results are below.
Round two · 21 September 2026
Fashion and delivery apps: what a customer simulation gets right, and what it cannot see
We tested Precheck against published experiments on app discounts and charm pricing, the two levers fashion retailers and delivery apps pull every day. It ranked the prices correctly, overstated how many would buy by a wide margin, and could not see the 9-ending effect at all. Then we ran six typical decisions in Indian prices to show what a run is useful for.
How a blind test works
A real experiment
Real customers were randomly shown different prices. The paper reports what share bought at each one.
We hide the answer
Precheck gets the customers and the situation in plain words. No brand, no paper, no web search.
The simulation runs
Each simulated person sees one offer at one price and takes it or walks away. Nobody is asked what they would pay.
We compare, in public
Real beside simulated, price by price. Hits and misses both go on this page.
The most useful blind test is yours.
Send a pricing, bundle or fee decision you already made and what happened. We run it blind and show you the comparison, hits and misses alike.