Subscription

A subscription model charges a recurring fee — monthly, annually, or on another cycle — in exchange for continued access to a product, service, or content library. It converts one-time purchasers into an ongoing revenue relationship.

The model reaches well beyond software into media, consumer goods, memberships, and services. The central operating question is churn: how long a customer stays relative to what it cost to acquire them.

Customers pay a fixed fee on a repeating cycle for continued access. Revenue is the product of subscriber count and average price, and the business compounds only if new subscribers plus upgrades outrun cancellations. Every subscription business is ultimately a race between acquisition and churn.

• Churn rate — the single most consequential number
• Customer lifetime value relative to acquisition cost
• Average revenue per subscriber
• Cohort retention curves — whether retention flattens or decays
• Trial-to-paid conversion, where a trial exists

Cohort retention curves that flatten rather than decay to zero — evidence of a durable core of users. Lifetime value comfortably ahead of acquisition cost. Rising average revenue per subscriber over time. Cancellations driven by circumstance rather than dissatisfaction.

• Content subscription — access to a library or feed
• Replenishment — recurring delivery of a consumable
• Membership — access, status, or community rather than a product
• Tiered — multiple price points serving different intensities of use

• What do cohort retention curves look like at twelve and twenty-four months?
• How much churn is involuntary, from failed payments?
• What is lifetime value relative to fully loaded acquisition cost?
• Has average revenue per subscriber risen or fallen?
• What share of subscribers actively use the product each month?