Most backtesters answer one question: did the strategy make money? The argument option sellers actually have is about the exit: take profit at 25% or 50%, stop at 2x the credit or ride it, close at 21 DTE or hold to expiration. Options Workspace prices every one of those combinations on the same set of trades and shows the whole grid, then checks the pick on trades it never saw, so what survives isn't curve-fit. Two things it refuses to fudge: fills and time. Entries and exits price on SPY one-minute bid/ask with commissions, not mid-price estimates, so friction shows up as its own line. And any backtested trade can be replayed minute by minute and managed by hand in the Simulator (roll it, close a leg, hold) on the same quotes it happened on. Type a trade the way you'd say it out loud: "45 DTE iron condor at 20 delta, take 50% profit, close at 21 DTE". It builds the whole backtest and shows every setting before it runs. SPY only for now, and it's a private beta trial: sign-up is open, no invite. Happy to answer anything here.

Options Workspace

Options backtesting software with an Optimizer and Simulator

Options backtesting software with an Optimizer and Simulator