Session P&L Analyzer
Your real results, measured against the maths
Most players remember their wins and round down their losses. This analyser does the opposite: it adds up every session you log, then compares your real result to what the maths predicted you would lose. The gap between the two is luck — and seeing it in numbers is the most useful thing a casino tool can show you.
Add your first session to see the analysis. Everything stays in your browser.
Everything is stored locally in your browser — no account, nothing uploaded, nothing shared. The predicted result uses the average house edge you set: 1% for Stake originals, 3–6% for most slots, under 1% for optimal blackjack. 18+ — if tracking your losses is uncomfortable, that is worth listening to.
How it works
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Log each session: date, game, total wagered and your net result.
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Set the average house edge of the games you play.
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Compare your real result to the mathematically expected one — the gap is luck.
About this tool
Memory is a terrible accountant. Wins are vivid and losses fade, which is why most players genuinely believe they are closer to break-even than they are. Writing sessions down fixes that, and comparing them to the maths fixes something more useful still: it separates what you actually did from what the game was always going to do to you.
The analyser multiplies everything you have wagered by the house edge you set — that is the amount the casino expected to take. Your real result sits above or below that line, and the gap is pure variance. Running above expectation is luck, not skill; running below is not a sign that a win is owed. Everything stays in your browser: no account, nothing uploaded. 18+, and if tracking your losses feels uncomfortable, that is worth listening to.
Frequently asked questions
Is my data sent anywhere?
No. Everything is stored in your browser only — no account, no server, no upload. Clearing your browser storage deletes it permanently, and nobody else can see it, including us.
What does the “luck” figure actually mean?
It is the gap between your real result and the amount the house edge predicted you would lose. Above the line means you have been lucky so far; below means unlucky. Neither is a skill signal, and neither predicts anything about your next session.
I am below expectation — am I due a win?
No. That is the gambler’s fallacy, and it is the single most expensive belief in gambling. Every round is independent: your next spin carries exactly the same odds as your first, no matter how the previous hundred went.
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Open toolThis tool is for entertainment and education. It does not predict outcomes and cannot beat the house edge. 18+ — play responsibly.