🎫 Train Station Subscription Pass Lab

Design a recurring-revenue station pass for commuters. Set the price, perks, churn, and costs, then see monthly recurring revenue, profit, customer value, and a financial-freedom reinvestment plan.

Pass controls

Station market Starting members Monthly pass price (£) Monthly perk cost per member (£) Monthly fixed costs (£) New members each month Monthly churn (%) Profit reinvested into freedom fund (%)

Recurring revenue is useful because it is predictable — but churn shows why happy customers matter.

—Monthly recurring revenue

—Monthly profit

—Customer lifetime value

—Yearly freedom fund

Station operator dashboard

Decision challenge

What this teaches

Subscription businesses need three numbers to work together: price, contribution margin, and retention. A low price can still win if customers stay for a long time; a high price can fail if churn rises.