Sell in May
iPhone / Finance
PROFESSIONAL MARKET ANALYSIS. COMPLETELY PRIVATE.
Sell in May brings institutional-quality market intelligence to your iPhone. Combining sophisticated pattern recognition with optional LSTM deep learning, it reveals what history suggests about any stock's future—under current market conditions.
WHY SELL IN MAY IS DIFFERENT
Unlike simple charting apps, Sell in May is regime-aware. It automatically classifies market conditions (volatility, trend, sentiment) and only shows you patterns from similar historical periods. Because markets don't behave the same in bull runs and bear markets.
DUAL-ANALYSIS ENGINE
• Pattern Matching: Scans 10+ years of historical data to find similar price patterns from comparable market regimes
• Optional LSTM AI Forecasting: Deep learning model generates probabilistic predictions for 5, 10, and 20-day horizons
• Two complementary perspectives reduce prediction bias and increase confidence
REGIME-AWARE INTELLIGENCE
Markets behave differently under varying conditions. Our engine automatically detects:
• Volatility levels (Low/Medium/High)
• Trend characteristics (Trending/Mean-Reverting/Neutral)
• Risk sentiment (Risk-On/Risk-Off/Neutral)
Historical patterns are filtered to match YOUR current market regime.
MACRO-ECONOMIC CONTEXT (Optional)
When configured with a FRED API key, the app integrates Federal Reserve economic indicators:
• Interest rates, yield curve, credit spreads
• Inflation metrics (CPI, breakeven rates)
• Economic growth indicators (unemployment, sentiment)
• Macro regime classification and recession probability
Patterns from similar economic conditions receive a similarity boost.
PROBABILISTIC FORECASTING
Never just a single number. Always a range of scenarios:
• Multi-horizon predictions with confidence intervals
• Return percentiles (10th, 25th, median, 75th, 90th)
• Downside risk probabilities
• Expected volatility forecasts
• Scenario distributions showing multiple possible outcomes
100% PRIVACY-FIRST
• Complete on-device processing—your data never leaves your phone
• No account required, no cloud backend
• Works offline after initial data fetch
• Zero data collection, zero tracking
• All analytics run locally on your device
PROFESSIONAL-GRADE TOOLS
• 14+ technical indicators (momentum, volatility, volume)
• Dynamic Time Warping and k-NN similarity matching
• Core ML deep learning inference (when AI forecasting enabled)
• Accelerate framework for optimized computation
• Real-time ticker tape
CLEAN, INTUITIVE INTERFACE
• Professional charts and visual cards
• Real-time market regime and macro context display
• Configurable settings (20+ parameters)
• Educational tooltips and dark mode support
WHO IT'S FOR
• Active traders generating probability-based scenarios
• Swing traders understanding multi-day forecasts
• Quantitative analysts researching historical patterns
• Privacy-conscious investors who won't compromise on tools
• Market students learning how regimes affect prices
DATA SOURCES
• Yahoo Finance for stock prices and market data
• FRED (Federal Reserve Economic Data) for economic indicators (optional)
• Stooq as fallback for extended historical data
• All data cached locally for offline capability
CONTINUOUS IMPROVEMENT
• Built-in performance tracking and background data refresh
• Model adapts to changing market conditions
NO SUBSCRIPTIONS. NO CLOUD. NO COMPROMISE.
Your market intelligence deserves the same privacy as your portfolio. Professional analysis. Consumer simplicity. Complete data sovereignty.
---
DISCLAIMER: Sell in May is a research and educational tool. Past performance does not guarantee future results. All forecasts are probabilistic and should not be considered investment advice. Always conduct your own due diligence before making investment decisions.
Requires iOS 17.0 or later.
