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Replay the market like it's live. On 20 years of data.

Trandle's backtester is a forward-only bar replay: the chart only knows the past, you trade the right edge — exactly like a live session, at any speed you want.

Start backtesting free See what's in each plan

Crypto data free on every plan · Gold, FX & indices on Pro · Your own MT5/TradingView CSV on any plan

How it works

From zero to your first session in two minutes.

Create a session

Pick the symbol, the starting date — anywhere in up to 20 years of history — your starting balance and risk per trade.

Trade the right edge

Advance candle by candle (+1, +5, +20, +100 or Play). Place market or pending orders straight on the chart, exactly like a live platform.

Manage like it's real

Drag SL and TP on the chart, take partials, move to break-even with the magnet. Equity, drawdown and R update live.

Read the verdict

Session stats — win rate, profit factor, max drawdown, R distribution — and every trade auto-logged to your journal with a screenshot.

The engine

1-minute engine. Any timeframe view. Zero peeking.

The engine always advances on 1-minute candles; you view and trade on any timeframe from 5m to weekly. Multi-timeframe analysis stays honest — no future data ever leaks into your chart.

Timeframe switching mid-session — drawings stay in place
Jump to any date/time ("what did NFP week look like?")
Sessions save automatically, resume any time
Gaps handled correctly: fills at the open, not at fantasy prices

Orders

Real order mechanics, not a click-to-mark toy.

Most "replay tools" let you mark entries. Trandle fills orders: pending orders trigger when price touches them, stops and targets execute on the next candle, gaps fill at the open.

Market & pending orders (limit/stop), draggable on the chart
Position tool: drag the R:R box, then "open at market"
Partial closes, multiple TPs, break-even automation
Risk-based sizing from your session balance

Analysis

20 drawing tools that survive every timeframe.

Fibonacci retracement and extension, parallel channels, Gann box and fan, rays, measure tool, text notes — drawn once, correct on every timeframe, saved with the session.

Indicators on the chart: EMA/SMA, RSI, ATR, VWAP, session zones
Measure tool: Δ price, %, bars — instantly
Automatic chart screenshot attached to every closed trade

Data

The data does the heavy lifting.

Depth	Up to 20 years of history on Gold, major FX pairs and indices (Pro), served from our data backend in 1-minute resolution.
Crypto	Free on every plan — years of real BTC/ETH data, down to the minute, straight from the exchange.
Your own data	Import MT5 or TradingView CSV exports on any plan — the parser handles broker formats automatically.
Performance	The engine runs entirely client-side: after data loads, replay is instant. No server round-trips, no lag, works offline.
Integrity	Forward-only. The chart physically cannot show you a candle you haven't reached. Backtests you can actually trust.

FAQ

Backtesting questions.

Why do other web backtesters lag and Trandle doesn't?

They replay on the server and stream you the result — every click is a round-trip. Trandle downloads the data once and replays it locally in your browser. After the first load, there is nothing left to wait for.

Can I test one strategy across many sessions?

Yes — assign a strategy to each session, and your analytics aggregate every session and every live trade tagged to it. That's the whole point of one workspace.

Do I need to download anything?

No. Trandle runs in the browser on Windows, Mac and Linux. Your sessions sync to the cloud and resume on any device.

What does the free plan include?

Unlimited backtesting on crypto data and on your own CSV files. Gold, FX and indices from our data backend are in the Pro plan.