FIRST-PURCHASE WINDOW

Find when new customers make their first purchase

Upload two anonymised date columns to build a monthly cohort analysis in seconds. Your file stays in your browser and is never uploaded to a server.

Private by design. Your CSV is processed locally in this browser and is never uploaded.

Step 1

Upload your customer CSV

Use one row per customer. Only the account creation date and first order date are required.

Drop your CSV here or choose a file CSV only. Files with thousands of customer rows are processed in-browser. No file selected

Account Creation Date First Order Date No email column needed

Current analysis

All account-creation cohorts are included.

Year From cohort To cohort

Show

Each column shows first purchases made during that exact account-age month.

Account age	First purchase rate	Customers	Eligible accounts

Read left to right to see when each account-creation cohort made its first purchase.

Scroll horizontally to see later months →