ARPCThe average amount of revenue earned from customers, specifically looking at the trailing 30 days

ARPC = Total Revenue for Trailing 30 Days / Total Number of Unique Active Customers
New Customer Sign-upsThe total count of new users that signed up and created accounts, that proceeded to place at least 1 order. The count of users is attributed to the signup date.
Customers per MonthThe total number of unique customers that placed orders in a given time period
MoM RetentionThe percentage of customers from the previous 30-day period that continued to purchase, subscribe, or with a product in the last 30-day period
New Users Sign-upsNumber of users, by signup date, even if they never placed any order