Free Backtesting

Test your trading strategies before risking real money. Compare 30+ tools across three backtesting approaches — find the right one for your trading style.

Explore Backtesting Types Start Manual Backtesting Free

What is Backtesting?

Backtesting is the process of testing a trading strategy against historical market data to evaluate how it would have performed. Instead of risking real money, you simulate trades on past price data to validate your approach before going live.

There are three fundamentally different ways to backtest, each suited to different skill levels, instruments, and trading styles. Understanding the differences helps you pick the right tool and avoid common pitfalls like overfitting and look-ahead bias.

Three Types of Backtesting

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Code-Based

Write code, feed data, run simulations

Use Python, C#, or other languages with backtesting frameworks. Full control over strategy logic, data sources, and execution simulation. Best for developers and quantitative traders.

Popular tools: Backtrader, Backtesting.py, QuantConnect, Freqtrade, VectorBT

Best for: Developers, algo traders, complex strategies

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Platform-Based

Built-in strategy testers in trading platforms

Trading platforms like TradingView, MetaTrader, and NinjaTrader have built-in strategy testers with their own scripting languages. Easier than coding from scratch — the platform handles market data.

Popular tools: TradingView (Pine Script), MetaTrader (MQL), NinjaTrader, cTrader

Best for: Traders already using a platform, semi-technical users

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No coding needed

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Manual (Chart Replay)

Visual replay of historical charts, place trades manually

Replay historical price data like a video — pause, rewind, fast-forward. Place trades manually as if you're trading live. No coding needed. Perfect for discretionary traders and beginners.

Popular tools: StrategyTune (free), TradingView Replay, Forex Tester

Best for: Beginners, discretionary traders, price action traders

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Quick Comparison

	Code-Based	Platform-Based	Manual (Replay)
Coding Required	Yes (Python, C#, etc.)	Platform scripting language	None
Learning Curve	High	Medium	Low
Speed	Very fast (automated)	Fast (automated)	Slow (manual decisions)
Data Management	You manage data sources	Platform provides data	Tool provides data
Flexibility	Unlimited	Limited to platform features	Limited to visual analysis
Best Free Option	Backtrader / QuantConnect	TradingView limited free tier	StrategyTune free backtesting
Ideal User	Developers, quants	Platform traders	Beginners, discretionary traders, quick validation, hard-to-code rules

Fastest Way to Backtest

For manual backtesting, StrategyTune lets you replay any instrument with tick-by-tick data directly in the browser. No registration or install needed — click an instrument and start backtesting.