Dividend Stacker is a free suite of tools for high-yield ETF investors. Calculate dividend income and total returns with DRIP, compare funds side by side, and track upcoming distributions from YieldMax, Roundhill, NEOS, Defiance, and REX Shares on a live dividend calendar. Get email alerts the moment a fund announces its next distribution, plus payout history, yield data, and change-vs-prior tracking for 150+ funds. Built from official sources — clear data, no hype, no financial advice.