At $15/month with 10% churn (which would be an unbelievably good churn rate for a paid B2C product) would make your LTV $150. An optimistic conversion rate from

At $15/month with 10% churn (which would be an unbelievably good churn rate for a paid B2C product) would make your LTV $150. An optimistic conversion rate from visitor to paid would be like 2% (imagine you convert 20% of visitors to a trial, and 10% of those to paid). In this incredibly optimistic world, you break even paying $3 to acquire a visitor. Congrats you have a money printing machine! More realistically though, you'll have like 33% monthly churn, $45 LTV, and 0.5% visitor-to-paid conversion. In that case you break even at $0.22 per visitor, which is a lot harder to make work. The game is building a valuable product with good onboarding and retention, then finding ad creative that works. It's not easy!