Backtesting · Replay

Practise on past charts, one bar at a time

REPLAY · PRACTICE SESSION
The Stryker replay workspace with a demo practice session: a BTC/USDT 5-minute candlestick chart with a stop and target drawn on it, a play and step control, and an account panel with one open position.
Demo data. A practice replay session on BTC/USDT.

Pick a market and a past date, and the chart stops there. Step forward bar by bar, place simulated orders with stops and targets, and see how you handle it. Every practice session then feeds a backtesting dashboard and a rule-based coach.

Every number in these screenshots comes from one demo practice session. Education only. Not financial advice.

What’s in replay and backtesting

Real screens from the tool, filled by one short demo practice session. Scroll through, or jump to one.

Replay workspace with demo data: a candlestick chart, timeframe buttons, drawing tools on the left and a play, +1 and +10 bar control.

Demo data. The replay chart.

01 / 09

Bar-by-bar replay

The chart only shows what had happened up to the current bar. Play it at a chosen speed, step one or ten bars, or jump to the next day or the New York open.

How it works

Choose a market, a start date and a window of one week to a few months. Futures, forex and crypto candles are loaded once and kept in your browser, or you can load your own CSV file. Switch timeframes from 1 minute up to weekly, and add a higher-timeframe chart beside it.

Replay account panel with demo data: balance, equity, open and net P&L, and one open position with stop and target fields.

Demo data. The practice account and an open position.

02 / 09

Simulated orders

Buy or sell from the chart, the order ticket or the keyboard. Attach a stop and a target, move them, or close part of a position. The practice account tracks balance, equity and open P&L as you step.

How it works

Fills follow simple rules: market orders fill at the last close plus any slippage you set, gaps fill at the open, and if one bar touches both your stop and your target the stop counts first. Commission per contract can be set per session. Real fills can differ.

Backtesting trades table with demo data: date, session, market, side, size, entry and exit, P&L, R-multiple and exit reason.

Demo data. Trades from the practice session.

03 / 09

Every trade, logged

Each closed practice trade is listed with its session, side, size, entry and exit, R-multiple and why it closed. Tag the setup and any mistake, and add a note.

How it works

Filter by market, side, outcome, session, setup, weekday, hour or date. Trades can be exported to CSV or copied into your trade journal.

Backtesting dashboard with demo data: a profit and loss line over the practice session.

Demo data. Practice P&L over time.

04 / 09

Backtesting dashboard

One dashboard across all your practice sessions: P&L over time, win and loss breakdowns, performance by side and by trading session, recent sessions and a P&L calendar.

How it works

Sessions are saved in your browser as you go, with a copy on your account so you can resume on another device.

Replay coach card with demo data: findings about the sample size, a losing trading session and re-entries after a loss, each with a suggestion.

Demo data. Coach findings on the practice session.

05 / 09

The replay coach

Rule-based checks on your own practice trades: losing streaks, overtrading, re-entries straight after a loss, which session costs you, and your most frequent tagged mistake. Each finding comes with a suggestion to consider.

How it works

It is a fixed set of rules that runs in your browser on your own trades. It is not a chatbot and nothing is sent anywhere for it. While you trade it can also show a short nudge, for example after several losses in a row.

Backtesting drawdown view with demo data: drawdown stat cards above a drawdown chart and an equity chart.

Demo data. Drawdown and equity for the practice session.

06 / 09

Drawdown and equity

How deep and how long your practice equity fell from its high, next to the equity curve itself.

How it works

Drawn from closed practice trades and the starting balance you chose for each session.

Backtesting simulation view with demo data: shuffled-order outcome bands around the practice equity curve.

Demo data. Simulation output, not a forecast.

07 / 09

Trade-order simulation

Shuffles the order of your practice trades many times to show how much the same trades could have swung in a different sequence.

How it’s calculated

It re-orders the trades you already took. It does not create new trades and it is not a forecast: a small sample, like the one here, says very little.

Backtesting analytics with demo data: donut charts splitting practice trades by long and short.

Demo data. Long against short.

08 / 09

Breakdowns

Split your practice trades by side, session, hour, weekday, setup tag, market and exit reason, and see where the R-multiples cluster.

How it works

Every chart uses the same filters as the trades table.

A saved replay session card with demo data: name, market, progress ring, P&L and a resume button.

Demo data. A saved practice session.

09 / 09

Saved sessions

Every session keeps its place, drawings, indicators and orders, so you can stop and resume where you left off.

How it works

Rename, resume or delete sessions from the Sessions view.

Set up, replay, review

A practice session takes a few minutes to start.

1

Set it up

Pick a market, a start date, a window and a starting balance. Optionally choose a playbook so its rules become your pre-trade checklist.

2

Replay it

Step through the chart and practise as if it were happening, with the future hidden.

3

Review it

Open the backtesting dashboard: trades, analytics and the coach, built from what you just did.

One way to practise a model

A simple routine for drilling one setup. Tap a step, or let it play.

Practice results are not trading results. A replay cannot reproduce real fills, nerves or news. Education only. Not financial advice.

Questions

Is replay trading real?

No. Orders are simulated against historical candles in your browser. No money and no broker are involved.

Can I see the future candles?

No. The chart stops at the current bar and only moves forward when you step or press play.

Which markets can I replay?

Futures such as NQ, MNQ, ES, MES, YM, RTY, GC and CL, major forex pairs, and BTC, ETH, SOL and XRP against USDT. You can also load your own CSV file of candles.

Is the coach a chatbot?

No. It is a fixed set of rule-based checks that run on your own practice trades in your browser.

Does a good backtest mean the setup works?

No. Practice results are not trading results, and a small sample says very little. Use replay to drill execution and to test whether you follow your own rules.

Which plan includes it?

Free members get 3 backtesting sessions a week. Pro is unlimited, with replay and the full analytics.

Practise before you risk anything

Create your free account and start a replay session.

Education only. Not financial advice.