CalcuSum

Investing is simple. Staying invested is not. CalcuSum helps you calculate and visualise index investment returns through dollar-cost averaging. Track your investments across major indices — S&P 500, NASDAQ, Dow Jones, and Hang Seng — with decades of historical data and intuitive charts. Pick an index. Set a timeframe. See what disciplined investing actually delivers. WHAT YOU CAN DO · Calculate returns across multiple major indices with real historical data · Simulate dollar-cost averaging strategies over custom timeframes · Compare investment strategies side by side · Study market recoveries and downturns · Track your portfolio progress over time · Journal your investment thinking and decisions BUILT FOR THE LONG GAME No predictions. No hype. Just data, clarity, and the quiet confidence that comes with knowing your numbers.