Backtest Now vs Stock Backtest

Analyze your investment approach with Backtest Now, the portfolio analysis app that lets you test investment strategies using decades of historical market data. While internet is required to fetch market data and run new backtests, all calculated results are stored locally on your device - review your portfolio performance anytime, anywhere, even without an internet connection. Key Features: Synthetic Leveraged ETF Backtesting • Backtest leveraged ETFs before they existed! • Analyze portfolio performance during historical crises • SPX 3X/2X/-2X/-3X data since 1928 • NDX 3X/2X/-2X/-3X data since 1985 • DJI 3X/2X/-2X/-3X data since 1992 • Test how 3X ETFs would have performed during Dot-com bubble & 2008 crisis Offline Access to Your Results • View all saved backtest results without internet • Access portfolio performance metrics anytime offline • Your calculated data stays on your device, always available • Internet only needed for running new backtests Backtesting Engine • Test portfolios from 1928 to present with real market data • Compare against S&P 500 (VFINX) benchmark automatically • Support for stocks, ETFs, mutual funds, and synthetic leveraged ETFs Comprehensive Performance Analytics • CAGR (Compound Annual Growth Rate) analysis • Sharpe Ratio for risk-adjusted returns • Annual returns breakdown • All metrics viewable offline once calculated All data is stored locally on your device for offline accessibility. No account required, just powerful investment analysis at your fingertips - online or offline. Start testing your investment strategies today and invest with confidence! Download now and take control of your financial future with data-driven insights.

$500 a month in TQQQ for 10 years, starting with $500: on past prices from January 2016 to December 2025, with $60,500 paid in, this app's backtest ends at $438K. That is a past result. The same screen shows how far it fell on the way. BacktestLab runs that kind of question on past prices. Put monthly investing next to a single lump sum, or one portfolio next to another, and read them side by side. ■ Whole shares only Many calculators assume fractional shares. This one does not. It buys only the whole shares that the day's price allowed and carries the leftover cash forward. ■ Dividends, reinvested or kept Dividends arrive as cash on the payment date. Reinvest them to buy shares again at that day's price, or keep them as cash and see them counted separately from the final value. ■ Risk next to the return Maximum drawdown, the drawdown chart and named crisis windows sit in the result next to the final value. ■ Build a portfolio Up to ten weighted assets. Choose a rebalancing interval and the original weights are restored on that schedule. ■ Compare Two portfolios over the same period, under the same conditions, side by side. ■ The next 10 years, as an assumption Continue a result with an annual return you enter yourself. It is drawn as an assumption, not as a measurement. ――― This app is a calculator based on past data. It is not investment advice, and past results do not indicate future returns. Taxes and trading fees are not included. No account is created. Calculations run on your device, and your portfolios and saved runs stay there. Available in English and Korean.