Free tools for founders

Work through your revenue and portfolio decisions. All tools are free to use without signup.

• MRR Calculator (and ARR) →

  Normalize subscription plans and discounts to calculate MRR, ARR and monthly ARPU.

• Stripe Gross Volume vs Net Volume Calculator →

  Calculate net volume, net after fees, refund rate, dispute rate and effective fee rate from Stripe amounts.

• Revenue Churn Rate Calculator →

  Calculate gross revenue churn, net revenue churn and NRR from one month of MRR movements.

• Revenue Concentration Calculator →

  See top-project share, top-three share and median MRR across your portfolio.

• Kill or Continue Scorecard →

  Review a project's traction and decide where to spend your time.