replicaKnow how your users will react
before
you ship
Replica creates digital twins of your users, so you can simulate any change before risking live traffic.
Book a demo
Your user base,
virtualized
Test with, speak and understand your users on demand, anytime.
Three ways to know
Every tool you need to predict, understand, and validate — without touching production.
Simulate
Behavioral TestingRun thousands of digital twins through any product change. See how cohorts react to new flows, pricing, and features — before a single real user is exposed.
Interview
Synthetic ResearchTalk to your users whenever you want. Digital twins retain the preferences, frustrations, and language of the people they mirror. No scheduling, no incentives.
Understand
Deep AnalyticsGo beyond metrics. Understand the why behind every action. Replay decision paths, surface hidden friction, and uncover intent at scale.
Measured accuracy, not guesswork
“The worst part of having lots of ideas is that they’re often bad. Before, I had to test the bad ideas on real users and take the loss. Thanks to Replica, now I don’t have to.”
From data to digital twin
Three steps. Zero disruption to your existing stack.
Connect your data
Pipe in session recordings, analytics events, and user attributes. Works with your existing tools — Statsig, Amplitude, FullStory, and more.
We build your twins
Our models fine-tune on your real sessions to synthesize digital twins that mirror how each user segment thinks, decides, and acts.
Simulate anything
Run A/B tests, conduct user interviews, and validate changes against your virtual user base. Get directionally accurate results in minutes.