Free SaaS Tools & Calculators
Interactive tools to help SaaS founders understand their revenue leaks, benchmark their churn, and quantify the ROI of payment recovery. No sign-up required — just plug in your numbers.
Revenue Tools
Calculate and project your recurring revenue metrics.
Failed Payment Revenue Loss Calculator
Calculate annual revenue lost to failed payments and how much is recoverable.
Calculate →MRR Calculator
Calculate MRR, ARR, and ARPU across your pricing tiers.
Calculate →Customer Lifetime Value Calculator
Calculate customer LTV, lifespan, and LTV:CAC ratio.
Calculate →Annual Revenue Impact Calculator
Project ARR over 12 months factoring in churn and expansion.
Calculate →Churn Tools
Measure, benchmark, and understand your churn.
Churn Rate Calculator
Calculate monthly churn, annual churn, and customer half-life.
Calculate →Involuntary Churn Cost Calculator
Find out how much involuntary churn from payment failures really costs.
Calculate →SaaS Churn Benchmark Checker
Compare your churn rate against industry benchmarks.
Calculate →ROI Tools
Quantify the return on revenue recovery investments.
Revenue Recovery ROI Calculator
See the ROI of automated payment recovery for your SaaS.
Calculate →Dunning Email ROI Calculator
Calculate revenue gained from dunning email sequences.
Calculate →Payment Retry Savings Calculator
See how smart payment retries recover more revenue than basic retries.
Calculate →Ready to Recover Revenue Automatically?
These calculators show you the opportunity. Rezoki captures it — with AI-powered dunning, smart retries, and voice recovery.
Start Recovering Revenue