The casino tracks every bet you make. This is the same technology, working for you: your real cost per hour, your results vs the math, your tilt patterns, and 1,000 simulated futures of your bankroll.
🔒 100% private — your data never leaves this device
Log a session
Recent sessions
The numbers nobody shows you
🧠 What the Black Box sees
🛟 If these numbers are hard to look at, that's the point — they're yours. Set a budget before every session, and if it stops feeling like entertainment, our Safer Play page has free, confidential resources.
1,000 futures of your bankroll
Same game, same bets, 1,000 parallel universes. The green cone is where your bankroll lands — the math of variance made visible.
Median future 25–75% of futures 5–95% of futures Bust line
Frequently Asked Questions
What is a bankroll variance simulator?
It runs thousands of simulated gambling sessions using the real house edge and variance of your game, then shows the full range of possible outcomes for your bankroll - including your risk of going bust.
Is my gambling data private?
Yes. Sessions are stored only on your own device (localStorage). Nothing is uploaded to any server, and no casino can ever see it.
How do I know my real cost per hour of gambling?
Log each session (game, average bet, duration, result). The Black Box divides your total net result by your total hours to show your true hourly cost or win rate, per game.