Free Tools

Interactive calculators to help you make better subscription business decisions.

Revenue Forecaster

Model your funnel, pricing, and churn — see your 12-month MRR trajectory, cash flow, and growth ceiling.

Find the exact month your growth stalls — and how much ARR you're leaving on the table. Interactive scenario modeler with charts.

Minimum Detectable Effect calculator for planning A/B test sample sizes.

Two-proportion z-test for A/B test results. P-value, confidence interval, and pass/fail verdict in one view.

Calculate customer lifetime value from ARPU, margin, and churn rate.

Convert between monthly and annual churn rates, and see your retention.

How many months does it take to recover your customer acquisition cost?

Find the right annual plan discount based on your monthly subscriber retention data.

Model the ARR, cash, and churn impact of shifting subscribers to annual plans.

Check if your unit economics are healthy for sustainable growth.

Get personalized guidance on improving your subscription metrics.