Look backward with real data. Look forward with probability.
Most young adults delay investing because it feels complex or risky. But the real risk? Missing years of compound growth.
"The best time to start investing was yesterday. The second best time is today."
Test investment scenarios risk-free with real historical data
Simulate historical market performance using actual data from Yahoo Finance — not guesses or projections
Compare individual assets or combine them into a diversified portfolio with custom allocations
Interactive charts show exactly how your investment would have grown — or shrunk — over time
Click any to run the full simulation with real historical data.
Everything you need to know about Invetest.
Invetest is a free investment return calculator that uses real historical market data to show what any investment would be worth today. Simulate past investments with Replay Mode or project future growth with 1,000 Monte Carlo simulations in Future Mode. No sign-up required.
Invetest uses real historical price data from Yahoo Finance for all calculations. Replay Mode shows exact returns based on actual closing prices. Future Mode uses Monte Carlo simulation based on real historical volatility — showing a probability range of outcomes, not a single prediction.
Bitcoin (BTC), Ethereum (ETH), Solana (SOL), Dogecoin (DOGE), the S&P 500, NASDAQ 100, Apple (AAPL), NVIDIA (NVDA), Tesla (TSLA), Microsoft (MSFT), Amazon (AMZN), Alphabet (GOOGL), Meta (META), Gold, Silver, Crude Oil, and many more. Over 30 assets total across stocks, crypto, indices, and commodities.
Yes — completely free. No sign-up, no credit card, no premium tier. All features including Replay Mode, Future Mode, portfolio comparison, and all historical scenarios are available to everyone at no cost.
The S&P 500 has returned approximately 10% per year on average, including dividends reinvested. From 2010 to 2024, a $1,000 investment grew to approximately $7,200 — a 620% total return. Simulate the exact S&P 500 return →
Look back at what you missed. Look forward at what's possible.
No sign-up required · Real market data