World's Most Advanced Human Simulation Model
A/B test 100s of product ideas against a replica of your target audience, before writing any code.
Trusted by PMs.
Backed by Results.
What product teams say after running their flows through Apriori.
“Apriori worked out great for us, helped us fasten up our product lifecycle in total, plus the founders are extremely professional. Looking ahead to invest in them.”
Helped us deliver project much faster“I always use Apriori to stress test my flows before I ship them. It's quite accurate and so much faster to do it this way!”
“It's a focus group that runs in minutes. The persona reasoning maps quite close to how our real users actually decide.”
“It brought interesting insights on our KYC screen we'd normally only find post-launch or after lots of ideation. The 'why' behind every drop-off is interesting.”
“I A/B tested five paywall variants overnight and shipped the winner with conviction, its so fast and quite accurate.”
“Apriori is my first stop for any new flow now. I validate the idea before engineering ever touches it.”
You're billing to build it twice.
AI made building fast. Knowing what to build is still guesswork, and on fixed-bid work, every wrong guess comes out of your margin. You design the flow, the client second-guesses it, you rebuild, you defend it in review on gut feel. Apriori lets you test a flow against a replica of your client's target audience before engineering touches it, so you ship the right thing the first time, and win approval with evidence, not opinions.
Rework eats your margin
On fixed-bid projects, every “client wants it different” rebuild is pure margin loss. One prevented redo pays for Apriori across the whole project.
Knowing what to build is the gap
AI has made building 10x faster, but what to build still remains unsolved. Having your target audience at your fingertips solves that bottleneck.
You win deals you’d otherwise lose
“We validate flows against your audience before building” beats “we’ll build what you ask.” Apriori isn’t just a tool. It’s a line in your pitch that wins the project.
Three steps. Results in minutes.
Share your flow
Send us your product screens and tell us who your target users are.
We simulate
We run diverse personas through your flow and capture what each one thinks, feels, and decides at every screen.
You decide with evidence
Get cohort-level analysis: which user types convert, which drop off, and exactly why. Per segment, per screen.
See it in action.
We ran a simulation on Univest's post-signup activation flow with 50 personas. The result: users hesitated when the offer looked free but the ₹1 activation price was not visible upfront. Making price, proof, and the CTA clearer lifted conversion from 22% to 44%.
Our model out-simulates the frontier.
On screen-conditioned action prediction, our fine-tuned 8B reaches 0.783 semantic similarity vs 0.459 (Claude Opus 4.7) and 0.482 (GPT-5.5). 79% of held-out cases clear the bar, versus 1–2% for frontier baselines. We published the benchmark, the method, and the limits.
Common questions.
About us.
We built Apriori because we kept watching the same thing happen. A team spends months building an onboarding flow. They launch. Half the users drop off at step three. Nobody knows why. The data says where, not why. The team guesses, ships a fix, waits another month. Repeat.
We thought: what if you could sit 50 different people in front of your product screens and listen to what each of them is actually thinking? Not aggregate heatmaps. Not five user interviews. Fifty distinct perspectives, each with their own context, biases, and decision logic. And what if you could do that before you write a single line of code?
That is what Apriori does. We simulate the humans your product will meet, so you can build for how they actually think.
The team
Founded by IIT Delhi alumni with backgrounds in product engineering at Microsoft and consumer fintech. We have spent years watching product teams make decisions in the dark. Apriori is our answer.
We are based in India, building for product teams globally.
What we believe
Every product decision should be backed by evidence, not authority.
Understanding users is not a luxury for funded teams. It should be fast, cheap, and available to anyone who ships product.
Honesty compounds. We will always tell you what our simulations can and cannot do.
Run your first 50-user simulation. Free.
Upload your screens, tell us the goal and audience, get a usability report in minutes. No card required.
Run a Free SimulationWorking with design partners in fintech and consumer apps.