Every client, any stack
Each account is on something different. Shopify, WooCommerce, or a custom backend, it does not matter. Upload a CSV or push orders by webhook or API. No integration project per client, no lock-in.
Built for agencies
The hypothesis engine for CRO and retention agencies.
Affinsy turns each client's order history into ranked, testable hypotheses, with the expected lift, the audience size, and the customer list to activate. The standard for CRO and retention hypothesis generation, built into one account that holds all your clients.
Run it per client, refresh it before every QBR, and walk in with the next set of tests already prioritised. No integration project, no data team, no per-account setup.
Why we built Affinsy
Made for agencies running many client accounts
No six-month BI build, no data team, no setup project per client.
Hypotheses, not dashboards
Your clients do not pay for charts. Affinsy ranks testable CRO and retention plays by expected lift, audience size, and effort, so every QBR opens with a clear next test.
Built to activate
Turn any finding into a customer audience and push it to Klaviyo, Mailchimp, or CSV. A REST API and MCP server (Beta) let your team and AI tools pull the same insights.
Leadership
Built with passion and deep technical expertise
Mateusz Jerzyk
Founder & CEOOver a decade of AI, machine learning and data engineering. Mateusz founded Affinsy to give CRO and retention agencies the analytics power to run testing programs across every client, without the enterprise price tag or a months-long implementation. Obsessed with making complex data pipelines feel effortless.
Our core values
Three commitments behind every feature we ship
Built for agenciesOne account, many clientsHypotheses, not dashboards
Ready to run your next client audit?
Drop in a client's order history and get ranked CRO and retention hypotheses in minutes. No credit card, no integration setup.