CalcuSum

The market rewards patience. CalcuSum gives you the clarity to stay the course — with real data, real indices, and real results.

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.

WHAT'S NEW IN 2.0
A major update built around clarity and depth.