Stop losing the customers you already paid to win.
Free tools and no-jargon guides on customer retention, for people running real ecommerce and subscription businesses. Not enterprise brands with a CRM team.
Free calculators that give you an honest number
No signup, no gate on the maths, nothing to install. Each one takes under a minute, and the workings are shown so you can check them.
Customer Lifetime Value Calculator
What a customer is worth over their whole relationship with you, for repeat purchase or subscription businesses, plus what happens when retention improves.
Open the calculatorDiscount Break-Even Calculator
How many extra sales a discount needs just to break even on profit. Usually more than the discount actually drives.
Open the calculatorStart here
Customer lifetime value, explained properly
What LTV actually is, how to calculate it for repeat purchase and subscription businesses, what a good one looks like, and why it changes every decision you make.
Read the guideA customer is not worth what they spend today. They are worth everything they might spend for as long as they stay.
Read Part One free
The first four chapters of Fix the Leak, 26 pages, no charge and no card. The number most businesses never work out, why acquisition is a tax on a broken business, and what a five percent improvement in retention is really worth. You will also get the newsletter, one email every couple of weeks. Unsubscribe whenever.
Find out which part of your store is leaking
The calculators give you a number. The Shopify Health Check tells you which of your four retention layers is weakest, what fixing it is plausibly worth against your own figures, and what to leave alone. If your fundamentals are sound it says so and tells you to spend the money on stock instead.
About 15 minutes with your own figures. It never asks for access to your store, and there is no call to book. 30 day refund, no questions.
Separately, 5 times a year I take on hands-on work to build the retention system rather than plan it. That one is by application. Foundations Sprint

Fix the Leak
A No-Jargon Guide to Customer Retention for Ecommerce Founders
Everything on this site, in order, in one place. 22 chapters over 144 pages, written for people who have to do the work themselves.
PDF and epub, downloadable the moment you pay. 30 day refund, no questions.