: The software splits your data. It builds the strategy on one half and tests it on the "unseen" other half to see if the logic holds up.
The Pro edition at $997 is worth it if you will spend 10+ hours per week building and filtering strategies. It pays for itself after two winning trades. However, if you are a casual trader, the $597 version is too limited—you need the full genetic engine to get robust results. strategyquant x review work