Bankroll tracker

Log every bet locally in your browser. Tracks ROI, hit rate, and total P&L. No account, no server, your data stays on your device.

0 bets logged
Total staked€0.00
P&L€0.00
ROI+0.00%
Hit rate0.0% (0/0)
No bets logged yet. Add one above.

How it works

Stored in localStorage. Clears only if you clear your browser. Export to CSV with the button below.

Step by step

  1. Log every bet, Description, stake, odds, result. Update result when settled.
  2. Track ROI, Total P&L / total stake. Aim for 5%+ over 200+ bets.
  3. Export to CSV, Download your full history any time.

FAQ

Is my data sent anywhere?

No. Bets are stored only in your browser localStorage. No server, no account.

How many bets do I need before ROI means anything?

200+ for a meaningful sample on a 5% edge. CLV is more reliable on smaller samples.