A winning trade can hide a broken rule. A losing trade can follow a careful plan. BarDrill gives you a way to examine both: replay a historical US stock trading day with virtual money, then review the decisions behind your result.
Choose a stock and a past date, or use a blind drill with both hidden until the session ends. The day unfolds through historical 1-minute bars. You decide when to enter, how much to risk and when to leave. The scorecard then puts those choices beside your profit or loss.
Make room for another practice day
The live market does not wait until you finish work. A setup may happen while you are busy, and watching a completed chart later is a different exercise from deciding before the next bar appears.
Replay changes the schedule. You can pause, advance one bar or increase the playback speed. That makes it possible to concentrate on a particular decision without waiting for another live session. It does not establish that replay produces better trading results. It gives you more control over when and how you practice.
The server releases bars one step at a time, keeping future bars out of the session. A blind drill also hides the ticker and date. That reduces the information you could use to recognize a familiar day, although no format can erase a market move you already remember.
A result is only part of the review
Before your first fill, set the rules for your session. These include maximum risk per trade, maximum daily loss and a trade limit. After the first fill, those settings lock, so the scorecard has a consistent reference for the rest of the exercise.
The discipline score starts at 100 and deducts points for specified rule breaks. Entering without a stop, widening a stop, adding to a losing position and quickly re-entering after a loss all have consequences in that score. Each recorded break includes its time, helping you locate the decision that needs attention.
Profit and loss remain visible. So do commissions, win rate, average R multiple and maximum drawdown. These figures describe the simulated session. Neither a strong result nor a high discipline score certifies that you are ready to trade real money.
Practice with a specific question
Start with one habit you want to examine. Perhaps you enter before defining a stop, or keep placing trades after reaching your own limit. Use the order preview to inspect risk before submitting, then compare your intention with the scorecard.
At the end, the remaining bars appear in grey. Review what happened next without pretending you knew it at the time. The home page lists previous sessions and an average discipline score for the browser you used. There is no account or login to connect that history across browsers.
Understand the boundaries
BarDrill uses 1-minute open, high, low, close and volume data. It has no Level 2 or tick data. Executions follow a fill model, including modeled slippage and commissions. A minute's price range cannot show every trade or the precise sequence of movements within that minute.
BarDrill is not a broker, places no real trades and provides no trade ideas, signals or investment advice. Simulated performance does not predict live performance. Read how it works to understand the mechanics, and the risk disclosure before drawing conclusions from a score.