Free backtesting, in your browser
Backtest a strategy on any US stock or ETF and compare it with holding the stock. You can run one backtest a day without an account.
Example: SMA Crossover on NVDA, 15-minute bars, Sep 3 to Oct 2, 2026.
What's free
Compare it with holding the stock.
Each result shows net P&L after commissions and slippage, Sharpe and max drawdown, with holding the same stock drawn on the same chart.
Questions
Before you try it.
Do I need an account?
No. You can run one backtest a day without one. A free account backtests 30 days of history and saves your runs.
What does the Trader plan add?
It adds a year of history and Optimize, for $29 a month.
Do I have to write code?
No. Start from a built-in strategy and change its settings.
Which markets can I test?
US stocks and ETFs.
Read more
More on testing a strategy.
Backtest without code
Built-in strategies, or your rules traded by hand.
TradingView strategy tester alternative
Backtest a strategy you wrote elsewhere, and check it for luck.
thinkorswim backtesting alternative
Backtest with no brokerage account.
Test a strategy
Paste a strategy and backtest it in your browser.
Manual backtesting software
Backtest by hand, with every trade journaled.
thinkorswim OnDemand alternative
Replay a past day without a brokerage account.
Backtesting
How the tester checks a result, from luck to walk-forward.