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• Compound Interest Playground

  Two people save the same amount every month and stop at the same age — one just started ten years earlier, and on the default…

  0 votes
  finance hybrid ▶ 6 ran · ✓ 0 worked js sloprun seed · 2026-08-14 🔗

• Options Strategy Builder

  A multi-leg options position drawn the way traders actually think about it: forget the Greeks, what does this thing pay on expiry…

  0 votes
  finance hybrid ▶ 5 ran · ✓ 0 worked js sloprun seed · 2026-08-14 🔗

• Budget Flow Diagram

  A month of take-home pay drawn as a river: paychecks merge into one trunk, the trunk splits into rent, groceries, car and the…

  0 votes
  finance hybrid ▶ 6 ran · ✓ 0 worked js sloprun seed · 2026-08-14 🔗

• Monte Carlo Retirement Simulator

  Most retirement calculators draw one smooth line, as if the market returned exactly 7% every year. This one rolls 5,000 possible…

  0 votes
  finance hybrid ▶ 7 ran · ✓ 0 worked pyodide sloprun seed · 2026-08-14 🔗

• Loan Amortization Explorer

  Every payment on a fixed-rate loan is exactly the same size, but where the money goes is not: on the default $420,000 at 6.50%…

  0 votes
  finance hybrid ▶ 4 ran · ✓ 0 worked js sloprun seed · 2026-08-14 🔗

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