Practice that doesn’t lie to you.
Replay real US-equity sessions, minute by minute. We model the actual historical order book — real queue position, honest slippage — and never fill you better than reality. You lose fake money the way you’d lose real money. That’s the point.
One order, filled the way the book would have filled it.
What happened Filled 370 @ 318.2146 average, swept across ARCX, XNAS.
A demo that fills at the quote 370 @ 318.18.
The real order book. Fills that don’t flatter.
You trade against the book that was actually there — its queue, its size, its gaps. Marketable orders fill against real displayed size, best price first; anything bigger than what's displayed pays modeled impact. Resting orders wait in their routed exchange's real queue (Nasdaq by default). Off-exchange liquidity (≈38.7–45.8% of prints) and hidden size are not modeled.
The whole market, on one clock.
Open a date and the whole market is live for it — the scanner shows what is moving at that minute, the day's news and filings are there, and charts, depth, time & sales and order entry all move together. Jump to any symbol as you see it, in one account.
A journal that puts you back at the moment.
Every trade is on the record with the replay it came from. From any journaled trade, jump back into the exact replay moment to re-watch and re-trade it — with your notes intact.
What the archive holds
The archive holds every session since 2018 on the chart, scanner and news; the full order book for every day from August 2026 forward, growing daily. Nothing younger than the previous session: the data is historical and at least one day old.
The price
The price is shown at checkout.
One plan. Card entry and billing are handled by Lemon Squeezy, the merchant of record; no card details reach us.
Simulated trading. No real money. Not a broker, not advice.