Bankroll Manager
Your money. Your math. No fairy tales.
A personal tracking tool for entertainment purposes — log your plays, watch your P&L by day, and see exactly which leg counts and multiplier tiers actually pay for you. Always confirm the current line at your own book. Play responsibly.
Stored on this device only — your log never leaves your browser.
Your numbers
Bankroll curve
P&L calendar
Are your multipliers beating the math? the money insight
A 3X tier pays 3× your stake when it wins — so you break even winning 1-in-3 (33.3%). Break-even win rate = 1 ÷ tier. Clear that number and the tier prints; miss it and the multiplier is eating you. Green edge means your hit rate is above breakeven. Red means it isn't.
| Tier | Plays | Win rate | Breakeven | Edge vs breakeven | Net | ROI |
|---|
No tiered plays yet
Tag your parlays with a multiplier tier (2X, 3X, 6X…) when you log them, and this table tells you which tiers you're actually beating.
Leg-count analysis
Same idea, grouped by parlay size: are your 2-leggers carrying the 6-leggers?
| Legs | Plays | Record | Win rate | Staked | Returned | Net | ROI |
|---|
Nothing graded yet
Once your plays are graded, this table breaks your performance down by number of legs.
Unit & risk calculator
Size the play before you place it. Kelly stakes from your win probability and the book's odds, mapped to 1u = 1% of your bankroll — plus a long-run risk-of-ruin read. Estimates, not promises.
Full Kelly is aggressive — most pros use a fraction. Stakes are capped at 5u no matter what Kelly says.
All math is an estimate from your inputs — long-run approximations, not guarantees. No promises, ever. Play responsibly.
Play log
No plays logged yet
Log your first play above, or import your graded Sim Lab tickets — your calendar, curve, and analytics build themselves from here.
Settings & backup
Stakes display in units too — e.g. $200 at a $100 unit shows as (2u).