thinkorswim backtesting alternative for US stocks and ETFs
Backtest a stock strategy. No brokerage account.
TraderPier runs in your browser and isn't a broker. You can run one backtest a day without an account.
Guest Pass at thinkorswim
at TraderPier
Example: SMA Crossover on NVDA, 15-minute bars, Sep 3 to Oct 2, 2026.
On every run
Compare it with holding the stock.
Net P&L is after commissions and slippage, and holding the same stock is drawn on the same chart. With 30 trades or more, the result also shows whether luck alone could explain it.
Questions
Before you try it.
Do I need a brokerage account?
No. TraderPier isn't a broker, so there's nothing to open or fund.
Can I replay a past day too?
Yes. You can replay any of the last 5 trading days without an account.
How much history is free?
30 days, or a year on the Trader plan for $29 a month.
Read more
More on testing a strategy.
Free backtesting software
What the free plan tests, and what Trader adds.
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.
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.