Planning Calculators

Subscription economics differ fundamentally from one-time purchase ecommerce. The calculators in this category capture the recurring-revenue math: MRR vs ARR, churn vs cohort retention, expansion vs contraction, the cost of saving a cancellation versus the LTV preserved.

These 12 tools cover subscription operations: revenue (MRR, NRR, expansion, subscription box margin), retention (churn rate, churn revenue impact, save offer ROI, frequency / cadence optimization), unit economics (subscriber LTV, subscriber payback period, annual vs monthly pricing), and growth (free trial conversion, add-on revenue, signup-to-paid economics).

The benchmarks: healthy DTC subscription churn is 5-10% monthly. Below 5% is exceptional; above 15% is unsustainable. NRR (net revenue retention) above 100% means existing customers grow faster than they churn — the gold standard. Free trial to paid conversion: 25-50% with credit card required, 5-10% without. Save offer acceptance: pause 30-50%, skip 20-35%, discount 15-25%, free month 8-15%.

The strategic insight: cadence-consumption mismatch is a top-three driver of subscription churn. Customers who use product in 45 days but receive monthly delivery cancel from "I have too much." Customers who use it in 30 days but receive every 60 days cancel from "I had to buy elsewhere." Default cadence to median customer consumption rate; offer flex options at signup.