The Ledger

The Ledger is a lightweight, offline betting ledger built for people who want sportsbook-style math without sportsbook platforms.

Track single bets and multi-leg parlays, calculate exposure instantly, and manage settlements in a clean, no-nonsense interface. There are no accounts, no servers, no APIs, and no third parties involved.

All data stays local in your browser after download.

Who this is for?

• Independent or private bookies

• Small betting groups keeping internal records

• Serious bettors tracking long-term performance

• Analysts who want clean bet math without platform lock-in

  Core Features
  
  • Track single bets and multi-leg parlays
  •  Automatic odds, payout, and liability calculations
  •  Full parlay leg breakdowns for transparency
  •  Settlement states: Open / Win / Loss / Push
  •  Clean ledger view with running totals
  •  Fully offline after download
  •  Simple HTML / CSS / JavaScript — easy to customize or extend

What This Is

✔ A tracking and calculation tool
✔ A private ledger
✔ A foundation for custom systems

What This Is Not

✘ Not a sportsbook
✘ Does not take bets
✘ No payments or custody
✘ No user accounts

You own the software. You control how it’s used. Use it as-is, or build on top of it.

Technical Notes

• Runs locally in your browser
• No internet required after download
• No data collection of any kind