Real tick-by-tick replay
A real past session, replayed tick for tick — the real consolidated tape and a real per-venue Level 2 montage. Not synthetic candles. The exact order flow that happened.
Live now — runs in your browser Re-trade real market days.
Re-trade real market days.
Tick for tick.
A browser-based replay simulator for daytraders. Practice your execution on the real tape — Level 2, halts and all — until being green is a habit.
The desk
Everything a real platform has.
retrader rebuilds the tools you trade with — the tape, the montage, the scanners, the blotter — wired to real historical data you can replay as many times as it takes.
Fills that punish chasing
Momentum and chase slippage, thin-book slippage, queue position. Halts and LULD fire when they actually did.
A review that grades you
Every round-trip auto-graded — MAE, MFE, slippage, capture %. Know how you traded, not just the P&L.
Scrub the tape
Grab the tape or the slider and scrub the day; charts update live. Re-run a day until you nail it.
A real multi-window desk
Platform, charts, gainers/HOD scanners, blotter — synced windows. Your journal auto-saves across devices.
The reps that compound
You don’t read your way to good execution.
You drill it. Every card here is something retrader puts in front of you, on a real day, until it’s a habit.
How much of the move you actually kept. The number that separates a good read from a good trade.
Capture %Maximum adverse excursion — the heat you took before it worked. Learn to size for the heat, not the hope.
MAERead the per-venue montage like the pros: where size is hiding, who’s refreshing, when the bid is real.
Level 2How much of the move you actually kept. The number that separates a good read from a good trade.
Capture %Maximum adverse excursion — the heat you took before it worked. Learn to size for the heat, not the hope.
MAERead the per-venue montage like the pros: where size is hiding, who’s refreshing, when the bid is real.
Level 2The origin storyStart your reps
“I built retrader for myself, to drill the days I kept fumbling. I’ve been green every day since I started using it.”
— the founder, an active low-float & IPO daytrader
That’s not a promise of returns — markets don’t work that way. It’s proof that the method works: enough honest reps on the real tape, with a journal that tells you the truth, and execution becomes a habit instead of a hope.
0%replayable, repeatable
$0at risk while you learn
0+venues in the montage
Pricing
Start free. Commit when it clicks.
Every plan runs in your browser. Start on free, upgrade the day the reps start paying off. Pay yearly and skip two months.
Free
Feel the real tape. No card, no catch.
$0always
Free forever
Start free- Unlimited synthetic practice
- A handful of real sample days
- Full hotkey order entry + Level 2 montage, one symbol
- Trade Review on every fill
Pro
Your full desk, and every day that mattered this year.
$14/mo
billed annuallysave $60 / year
Go Pro- The full real-data day library — the last 12 months, every runner
- The multi-window desk: tape, montage, scanners, blotter
- Unlimited journal history, every round-trip auto-graded
- Synced across every device
Advance
Everything in Pro — plus the archive, an AI coach, and your own agent.
$36/mo
billed annuallysave $156 / year
Go Advance- The full 8-year archive — every squeeze, every classic runner
- An AI coach that reads your reps and names your leaks
- Wire in your own AI agent — MCP + API
- Priority on everything
retrader is practice and education on historical data — not live trading, and not financial advice. Trading real markets carries real risk of loss.
FAQ
Straight answers.
Yes. retrader replays real historical trading days tick by tick — the real consolidated tape and a real per-venue Level 2 montage. It’s the order flow that actually happened, not a synthetic simulation.
No. retrader runs entirely in the browser. Open a day and start trading — nothing to download, nothing to configure.
No. Everything is practice on historical data, so there’s no real money at risk and nothing to lose. It’s a training tool — education and reps, not live execution or financial advice.
US equities, with a focus on the active small-caps — low-float runners and IPOs — where the tape moves fast. That speed is the point: it’s where execution reps matter most.
As many times as you want. Days are processed once and cached, so re-practicing is instant and free. Run a setup until you nail it, then A/B your own decisions.
Automatically. Every round-trip is graded and stored to your account, and it follows you across devices — open the same journal on any machine.