SpreadSimOpen the simulator →

Practice · not real money

Learn to sell credit spreads before you risk a dollar.

Build a vertical credit spread against historical price action, fast-forward to watch the modeled P/L, and get an AI coach's honest read on every practice trade. No broker account. No real money.

Try 10 trades free then $29 one-time for the full version
SPY put credit spread · 400/390payoff at expiry (modeled)
BE 398.02412.00

The flat top is your max profit; the floor is your defined risk. That shape is the whole point of a spread.

Build & fast-forward

Pick a ticker and date, shape the spread, then advance day by day and watch P/L, breakeven and max profit/loss update live.

An AI coach, every trade

Close a trade and the coach grades your rationale and names one thing a disciplined trader would have done differently.

A record that teaches

Every practice trade lands in a tracker with win rate and average return, so your habits become visible. Export to CSV anytime.

Straight about the model: SpreadSim prices options with a Black-Scholes model off real historical underlying prices — it's a teaching tool, not a backtester quoting real option fills. That's exactly why it's great for building the habit and terrible for pretending you found a holy grail.

Full version

$29$39one-time
  • Unlimited practice trades
  • AI coaching on every closed trade
  • Tracker CSV export
  • No account, no subscription

Launch price for the first two weeks. Start with 10 free trades — no card.