Wall Street Zine is a free "What if I had invested?" calculator. Pick a stock, ETF or crypto from a list of roughly 150 tickers (about 115 stocks, 20 ETFs and 10 cryptos), a start month and an amount, with an optional monthly contribution and dividend reinvestment, and see a chart against the S&P 500 (SPY).
Prices are monthly and come from Yahoo Finance, with data sources cited on the page. Fees, taxes and FX are excluded. There is no sign-up and no pricing, and the page carries a not-financial-advice disclaimer.
People love asking what if they had bought Apple, Bitcoin or Nvidia back then, but most calculators are buried in broker sites or need a login. Wall Street Zine was built as a simple one on real data.