GreyBox Trading Lab

Learn trading by doing,
not watching.

A flight simulator for traders. Trade unknown markets replayed candle-by-candle, get coached on every decision, and build real skill through deliberate practice.

Enter the Lab
Free modules · quick sign-up to start · educational only
Not sure where to start? Find your trader type — it picks your first drill. →
GreyBox Lab · ArenaNIFTY · 1mLIVE
IntradayDowntrendUnknown market
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DecisionQuality
Coach: You went short with no stop set. Define your risk first — discipline beats prediction.
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What it is

A trading terminal that teaches you.

You sit at a real chart and make real decisions under uncertainty. As you do, the Lab watches how you decide — and coaches you toward the process that actually makes traders profitable.

Unknown markets, no hindsight

No cheating the outcome.You never know the stock, the year, or the condition until the session ends — so you decide under genuine uncertainty, not by pattern-matching a chart you’ve already seen.

A live decision coach

Caught in the moment.It flags the behaviour that quietly loses money — no stop, revenge entries, widening stops, overtrading — and reinforces the good habits in real time.

Scored on decisions, not luck

Process over P&L.Your headline number is a Decision Quality Score, not profit. Win recklessly and it says “that was luck.” Lose with good process and it says “keep going.”

A structured curriculum

Twelve guided drills.Four modules — risk, booking losses & profits, psychology, reading the market — each teaching a concept, then dropping you into the exact drill for it.

Every timeframe

5-minute to daily.Practise from fast intraday decisions to slower positional ones across 5-minute, 15-minute, hourly and daily bars. Each timeframe genuinely feels different.

Progress that compounds

It remembers everything.A weakness heatmap, XP for discipline, a daily streak, missions and badges — so you always know exactly what to work on next.

How a session works

Trade → get coached → learn → repeat.

1

Pick a lesson

The concept is explained, then the terminal loads with the matching market & objective.

2

Make decisions

Go long or short, set stops and targets, manage the trade as the chart moves live.

3

Get analysed

Every decision is logged and scored. The market is revealed; the coach tells you what you did well and badly.

4

Advance

A mentor note hands you the one thing to fix and the next rep — one lesson at a time.

Want the detail? Read the step-by-step guide — placing an order, setting a stop, sizing a position and how scoring works.

The curriculum

From protecting capital to reading the market.

The same spine as our courses — but practised, not watched.

Module 1

Risk Management

  • Protect every trade with a stop
  • Position sizing — risk 1%
  • Exposure vs risk — the two numbers
  • Never average a loser
  • Honour your stop — never widen it
  • Mastery: Risk & Sizing
Module 2

Booking Losses & Profits

  • Book the small loss
  • Book profits — set a target
  • Let winners run
  • Ride winners with a trailing stop
  • Mastery: Booking & Targets
Module 3

Discipline & Psychology

  • No revenge trading
  • The patient trader
  • Add to winners, never to losers
  • A clean, disciplined run
  • Mastery: Discipline
Module 4

Reading the Market

  • Trading with a trend
  • Trading a range
  • Surviving volatility
  • Mastery: Reading the Market
Most trading “education”
The usual approach

Watching, not doing

Passive content that feels like progress, then leaves no skill behind when the market moves.

  • Hours of videos you forget
  • Backtests with the answer already visible
  • Celebrates paper profits and lucky runs
  • No feedback on your decisions
Measured on what you watched
GreyBox Trading Lab
Our approach

Reps under real uncertainty

Live charts with the market hidden, and a coach that scores the decision instead of the P&L.

  • Reps you actually do, under uncertainty
  • Markets hidden until the session ends
  • Rewards discipline and process
  • Coaches & remembers every decision
Measured on Decision Quality · free to start, no card required
FAQ

Questions, answered plainly.

Everything people ask before their first session.

What is the GreyBox Trading Lab?

A practice simulator for traders. You sit at a chart that replays candle-by-candle, make real decisions under uncertainty, and get coached on how you decided — position sizing, stops, patience, discipline. Think flight simulator, not tip service.

Is this real money or real market data?

Neither. Every chart in the Lab is synthetic data generated by us, and every trade is simulated with play capital. Nothing you do here places a real order or touches a real broker. The Lab is educational only — it is not investment advice and gives no buy or sell calls on any real security.

Do I need an account? Is it free?

Yes, a free account is needed to enter the Lab — it takes a moment, needs no card, and it is what lets us save your progress, streak and score. The free account includes Module 1 of the curriculum plus unlimited practice sessions in the Arena. Lab Pro unlocks the later modules and the advanced indicators (VWAP, RSI, MACD, ADX).

How do I get in?

Press Enter the Lab, create your free account or log in, and you land in your workspace. From there pick the next lesson on your learning path, or go straight to the Trading Arena to practise freely.

How do I place a trade?

Press BUY or SELL on the trade bar under the chart. In free practice, the Daily Challenge and the first lesson you are in the trade immediately at a sensible default size — then you set your stop. From the sizing lesson onwards the full order ticket opens instead: quantity, stop, target, and the exposure and risk figures, then PLACE. Keyboard: B to buy, S to sell.

How do I set a stop-loss and a target?

Once you are in a trade, the position bar shows SL and TP controls: tap a preset (0.5%, 1% or 2% away for the stop; 1%, 2% or 4% for the target) or type the exact price. When the full order ticket is open you can set both before you enter. TRAIL SL makes the stop follow price in your favour — and it never widens.

What does the Lab mean by exposure and risk?

Order value (exposure) is how much capital the position commands — quantity × price. Risk if stopped is what you actually lose if price hits your stop — quantity × (entry − stop). They are very different numbers, and you size on the second one. A tight stop lets you hold large exposure at small risk; a wide stop risks a lot even on a small position. Both are shown live in the order ticket.

What is “Decision Quality”, and why not just score profit?

Because a lucky win is still a bad trade. Your headline number is a Decision Quality Score that grades your process — did you define risk before entering, size sensibly, respect your stop, avoid revenge entries and overtrading. Win recklessly and the Lab says so; lose with sound process and it tells you to keep going.

What is the Daily Challenge?

One chart, the same for everyone, every day. Clear it to keep your streak and earn bonus XP. It is a way to get a single honest rep in on a busy day.

Is my progress saved? What do I get for signing up?

Yes — with an account the Lab remembers every session. Your Performance page keeps an overview and a full trade journal, plus XP, a daily streak, missions, badges and a weakness heatmap that tells you what to work on next.

Can I use it on a phone?

It works on a phone for reading and light practice, but the Arena is a chart-and-ticket workspace — a laptop or desktop is a much better experience, and that is what we would recommend for real practice.

Which drill should I do first?

If you are not sure, find your trader type first — 23 situations, about five minutes, no charts. It reads how you behave under pressure and points you to the one drill that trains your pattern: the patient-trader mission if you chase moves, the no-revenge mission if a loss carries into your next trade, and so on. If you would rather just start, Module 1 (Risk Management) is the right first stop for everyone.

Does the Lab give trading tips or signals?

No. We never tell you what to buy or sell, and we make no claims about returns. The Lab teaches process on simulated markets. What you do with real money in a real market is your own decision and your own risk.

Start building the skill.

Open the Lab, take your first lesson, and make some real decisions. Free to start, no signals, no hype.

Enter the Lab

Educational simulation only — not investment advice, no buy/sell calls.