Wealth Lab: Investment Calc

Wissper Studio

In-app purchases

About this app

Wealth Lab is a professional-grade investment and financial-independence
planner that runs entirely on your device. No account, no sign-up, no tracking —
open it and start projecting.

PLAN YOUR COMPOUND GROWTH
• Year-by-year compound interest with interactive charts
• Variable contribution plan (different monthly amounts for different periods)
• Inflation-indexed contributions and real (purchasing-power) returns
• Fund fees and tax/withholding modelled into net results

SEE THE FULL RANGE OF OUTCOMES
• Three scenarios: bearish, base and bullish
• Monte Carlo simulation with a shaded confidence band
• Maximum drawdown, volatility and a Sharpe-style risk ratio
• Stress tests: 2008 crash, 2000 dot-com, 1973–74 stagflation

REACH FINANCIAL INDEPENDENCE (FIRE)
• Lean / Coast / Fat FIRE targets calculated automatically
• Adjustable Safe Withdrawal Rate (2%–6%, Trinity-style)
• FIRE milestone marked on the chart — see the exact year you get there
• Passive income from dividends and Eurobond coupons, with DRIP on/off

PRO TOOLKIT
• Historical backtest (S&P 500 from 1928, Nasdaq, Gold, BIST)
• Decumulation phase (fixed 4%, Guyton-Klinger, market-linked)
• Reverse calculator (solve for monthly, years or required return)
• Asset allocation with correlation matrix and Sharpe
• A/B scenario comparison and life-goal milestones
• Live exchange rates with offline cache · PDF + CSV export

MULTI-CURRENCY
USD, EUR, TRY, GBP, JPY, CHF, CAD, AUD, CNY, INR.

PRIVACY FIRST
All calculations are client-side. Your inputs and saved plans never leave your
device. The optional one-time "Pro" upgrade is processed by Google Play; we use
RevenueCat only to enable purchase and restore. No ads. No analytics SDKs.

Wealth Lab is an educational planning tool and does not provide personalised
financial advice.

What’s new

Plan your path to financial independence (FIRE) with Wealth Lab. Project investment growth, passive and dividend income, and the savings you need — all with clear, interactive charts.