About this app

Ten real index windows from 1929 to 2022 — Black Monday, the dot-com bust, the financial crisis, COVID, the 1973 oil shock, LTCM — stripped of dates, labels and levels, leaving only the shape. Five a day, multiple choice, with the actual fall from the start of each window revealed on answering.

Get it free Browse marketplace

Win rates and risk grades are computed by Masterboard from tracked trade outcomes after the strategy is assessed — not self-reported by sellers. Past performance does not guarantee future results.