Big money decisions,
done with real math.
Should you refinance? Can your portfolio survive 30 years of spending? What are those RSUs actually worth after tax? Stop guessing — model it.
Home & Property
Buy, sell, renovate, or rent out — run the numbers before you sign anything.
Budget the project, then track actuals against it
Open calculator →Cash flow, cap rate, and cash-on-cash in one view
Open calculator →Profit, ROI, and holding costs before you buy
Open calculator →Monthly savings vs. closing costs, breakeven included
Open calculator →The true cost of each path, year by year
Open calculator →Payment, amortization, and payoff date
Open calculator →Debt & Investing
Pay it down faster, grow it smarter. The math, visualized.
Retirement & Equity
Drawdown plans and stock compensation, modeled year by year.
Every calculation happens on your device. Your numbers are never sent to a server, stored, or sold.
Each calculator documents its formulas and assumptions, so you can verify every number yourself.
Not generic widgets — each tool models a specific real-world choice, with the edge cases included.