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E-commerce growth comes down to three levers. Measure each one.

Customer value, the cost of losing them and loyalty ROI. Three free calculators that turn personalization and retention into concrete numbers for your business.

01 · Value

How much you earn from one customer over their whole lifecycle.

CLV calculator →

02 · Loss

How much revenue you lose when customers leave.

Churn cost →

03 · Loyalty

How much you give away in points and whether it pays off.

Loyalty program →

Lever 01

What is your customer really worth?

A single transaction is the tip of the iceberg. Customer Lifetime Value shows the full value of the relationship - and how strongly it grows when a customer stays with you longer.

Average order value (AOV) —

Purchases per year —

Margin —

Annual retention —

Horizon —

CLV over horizon

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Annual customer value

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Gain at +10 pp retention

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How do we calculate this?

Annual customer value = AOV × purchases per year × margin. CLV over the horizon is the sum of annual values across consecutive years, weighted by retention - the value of year N decreases proportionally to the probability that the customer still buys. Retention growth compounds, which is why even a few percentage points significantly raise CLV.

Lever 02

How much does every churning customer cost you?

Churn is a silent revenue leak. Before you invest in acquiring new customers, see how much you lose on the ones you already have - and how much you recover by acting on retention early.

Active customers —

Annual churn rate —

Average order value —

Purchases per year —

Lost revenue per year

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Customers lost per year

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Recovery at churn −5 pp

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How do we calculate this?

Lost customers = number of customers × churn rate. Lost revenue = lost customers × AOV × purchases per year. Recovery shows the revenue saved if churn dropped by 5 percentage points - exactly what churn prediction in Synerise enables, flagging at-risk customers before they leave.

Lever 03

Does your loyalty program pay off?

Points are a real cost - but a well-designed program lifts member spending enough to pay off many times over. Check your break-even point and ROI.

Active program members —

Average annual spend per member —

Points per €1 —

Value of 1 point at redemption —

Point redemption rate —

Member spend uplift —

Program ROI

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Program cost per year

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Additional revenue per year

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How do we calculate this?

Cost = total member turnover × points per €1 × point value × redemption rate. Additional revenue = total member turnover × spend uplift. ROI = (additional revenue − cost) / cost. The default 17% uplift matches the average AOV increase among Persooa clients.

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Measure your growth and let’s talk.

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