A repeat customer is a paying customer who has come back to your store to place additional orders after their first.
Getting one-time customers to come back is such a huge hurdle for ecommerce stores that it's important to track customers who have gotten past that.
Repeat customers are the same as returning customers in my opinion. Some people make a distinction between the two like returning customers have placed two to four orders and repeat customers have five or more orders. I feel like that distinction doesn't matter enough to give different labels to each.
Eric Davis
Refine your automated marketing campaigns with better timing
When building any automated marketing campaign that sends messages over time, you need to know how long the campaign should be and how long to delay the messages. The Customer Purchase Latency metrics calculated by Repeat Customer Insights can help you figure out that timing.