Tired of session limits, paywalled timeframes, and restricted chart data? BacktestLab Pro provides 100% free multi-timeframe bar replay, unlimited backtesting sessions, deep historical chart feeds, and realistic execution simulation for Forex, Gold (XAUUSD), and Crypto with zero sign-up friction.
Other websites cut you off after 5 sessions or lock historical data behind costly subscriptions. We don't.
The ultimate 100% free trading backtesting website for discretionary and systematic traders.
Test our zero-lag bar replay engine on XAUUSD candles below with unlimited free data.
From initial concept to unlimited backtesting and production code export.
Connect your preferred AI provider via client-side API keys (Google Gemini, OpenAI, Anthropic). Chat directly with the engine to formulate algorithms, apply indicators, and stress test setups on historical ticks with zero proprietary leak risk and unlimited test sessions.
“Buy when price sweeps Asian session low on Gold M5 and closes back above. Stop below low. Target 2R. Filter with RVOL > 1.5.”
Multi-year tick feeds. Free replay with zero session limitations.
Institutional archives for XAUUSD, EURUSD, GBPUSD, and USDJPY with spread and tick-step precision.
Comprehensive historical datasets for SPY, QQQ, AAPL, NVDA, and benchmark global stock indices.
Archival spot liquidity feeds for BTC, ETH, and major crypto assets across full bull and bear market cycles.
Compare competing models side-by-side with unlimited testing sessions. Benchmark entry signals, correlate drawdowns, and identify portfolio hedging benefits across historical feeds.
Replay and verify these setups free on our chart engine with zero session limits.
Captures sweeps beyond Asian Session extremes with Relative Volume (RVOL) expansion filters.
Systematic backtesting for Balanced Price Range mitigations and institutional Fair Value Gaps.
Previous-day high and low level retests filtered by relative session volume and spread modeling.
Only when you decide to take your algorithm live into live MT5 or Python execution.
Your historical testing and bar replay remain 100% free with unlimited sessions. When you are confident in your trading system and want clean source code, purchase the production code bundle.
Yes. Backtesting, historical chart data, bar replay, and session testing are 100% free forever with no credit card or hidden subscription paywalls.
Yes! Unlike other platforms that cut you off after a few daily sessions, BacktestLab Pro features unlimited backtesting sessions and unlimited candle replays.
You get multi-year tick feeds for Forex, Gold (XAUUSD), and Crypto across 1m, 5m, 15m, and higher timeframes, combined with realistic execution simulation for SL/TP and spreads.
Yes. Our simulator supports tick and bar replay designed specifically to test Balanced Price Ranges, Fair Value Gaps (FVG), Asian session sweeps, and PDH/PDL break-and-retest patterns.
You bring your own AI API key (Google Gemini, OpenAI, etc.). The prompt logic operates directly in your browser. We never store or resell your proprietary logic.