I Built a Crypto Passive Income Calculator. The Math Surprised Even Me.

I wanted to see four crypto passive income methods compared side by side with real dollar outputs. Not APY percentages — actual portfolio values based on my capital and time horizon. Every calculator I found was single-method. ETH staking only. Or DeFi APY only. Nobody had built the comparison I wanted. So I built it. What It Does Forward mode — you put in capital ($500 to $1M+), select a time horizon (1-10 years), toggle compounding on or off. Four methods update simultaneously: — ETH Staking (3.5% APY current rate) — DeFi Lending (6% APY Aave/Compound average) — Copy Trading (~25% avg retail) — Endotech AI (163% avg annual — 8yr institutional record) You get total portfolio value, monthly profit, percentage gain, a Chart.js growth line chart, and a year-by-year breakdown table. Goal/Reverse mode — the feature that makes people stop. Enter a target monthly income. The calculator tells you how much capital each method requires to hit that number. The output that gets screenshots: Targe