I'm an engineer who couldn't find a calculator that handles two income streams. So I taught myself React Native and built one. 🔢 4 Modes: Growth, Withdrawal, Lifecycle, 4% Rule 💰 Dual contribution streams (salary + side income) 📊 Strategic insights for every scenario 📋 Save & compare scenarios side-by-side 🌍 3 Languages & 3 Currencies 🌙 Dark mode Free on the App Store. Built by an engineer, for anyone serious about their financial future.