ThesisEdge

ThesisEdge turns plain-language investment ideas into rigorous historical backtests. Describe your strategy how you'd explain it to a friend — "DCA $500 monthly into SPY for 20 years, reinvest dividends" — and an AI built on gpt-5-mini parses it into precise parameters. A backtest engine running locally on your phone then simulates it against 30+ years of SP 500 history, including dividends, splits, ETF expense ratios, and capital gains tax. What you can test: • Single-stock buy-and-hold (AAPL, NVDA, TSLA, etc.) • Monthly/weekly DCA into individual stocks or ETFs (SPY, QQQ, VTI) • Equal-weight baskets (FAANG, dividend aristocrats) • Top-N screeners by market cap or growth metrics • Contrarian strategies (buy the laggards, RSI below 30 etc.) • "What if I bought at the 2007 peak?" worst-case timing Results include CAGR, max drawdown, Sharpe ratio, profit factor, win rate, and a side-by-side benchmark vs. SP 500. You can compare two strategies head-to-head and adjust for inflation (US CPI or PL CPI for PLN strategies). The engine is validated against open-source backtesting libraries (vectorbt + backtrader) on 100 diverse strategies — 96% match within 2%. The AI parser achieves 100% accuracy on 179 test prompts across 8 languages. Available in: English, Polish, German, French, Spanish, Portuguese, Simplified Chinese, Japanese. Free with ads. Each AI query has a cost; ads help keep the project running. Watch a short video to unlock extra features. Disclaimer: ThesisEdge is an educational tool for historical simulations. Past performance is NOT a guarantee of future results. This app does not provide investment recommendations or advice. All investment decisions are your own responsibility. SUBSCRIPTION & PURCHASES ThesisEdge Premium — Monthly (auto-renewable). Length: 1 month. Price: $2.99 USD/month (prices may vary by region). Premium removes ads and unlocks extra features. We also offer a one-time AI Token Pack (consumable, $2.99). Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless canceled at least 24 hours before the end of the current period; your account is charged for renewal within 24 hours before the period ends. Manage or cancel anytime in your App Store account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://kandyb-studio.eu/apps/thesisedge/privacy.html