Simulation & tracking

Bankroll Tracker

Log every bet, see your true win rate and ROI.

Total bets

Total staked

0 ₽

Net P/L

0 ₽

ROI

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Win rate

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The log is empty.

Add your first entry to see metrics and the chart.

How it works

Logging every bet is the one habit that actually helps. It turns vague feelings ('I'm about even') into the real number — usually a slow bleed. Stored only in your browser.

ROI is net P/L divided by total amount staked. It is fairer than absolute profit because it accounts for turnover. The chart shows the cumulative result as entries come in.

ROI = Net P/L / Total staked

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Expected Value (EV) Calculator

See if a bet is +EV before you place it.

How the Bankroll Tracker works

A bankroll tracker is the single most useful habit for any serious bettor. Log every wager and this free tracker turns vague feelings into hard numbers: your true win rate, ROI, net profit, and a cumulative profit chart over time. Everything stays in your browser.

Why track your bankroll

Memory is kind to gamblers — we remember the wins and forget the slow bleed. Tracking your bankroll bet by bet replaces 'I think I'm about even' with the real figure, which is usually a steady loss for casino games and the difference between winning and losing bettors in sports. A bankroll you actually measure is one you can manage.

What the metrics mean

ROI (return on investment) is your net profit divided by total amount staked — the cleanest measure of edge. Win rate is the share of bets that profited. Net P/L is your total profit or loss. Watch the cumulative chart: a line drifting down is the truth most systems hide, and the clearest picture of how your bankroll is really trending.

Your data is private

Every entry is stored only in your browser's local storage. Nothing is uploaded, no account is required, and you can export the habit of honest record-keeping to any game you play.

FAQ

How do I calculate betting ROI?expand_more

ROI = net profit ÷ total amount staked, expressed as a percentage. This tracker computes it automatically as you log bets.

What is a good win rate?expand_more

It depends on the odds you take. At even money you need over 50% to profit; at higher odds a lower win rate can still be profitable. ROI is a better single measure than win rate alone.

Is my betting data stored anywhere?expand_more

Only in your own browser via local storage. There is no account and nothing is sent to a server.

Can I track any type of betting?expand_more

Yes. Sports bets, casino sessions, poker — log the stake and net result of anything and the metrics update automatically.

Key terms

Bankroll Drawdown Hit rate (strike rate)Limit (account limiting)ROI (return on investment)Tilt Unit Yield

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