Sell in May

AI-Powered Market Intelligence

$24.99

Historical pattern matching + optional on-device LSTM forecasts. Watchlist pattern alerts, persistent AI chat, live DCF data. 100% private. No cloud. PROFESSIONAL MARKET ANALYSIS. COMPLETELY PRIVATE. Sell in May brings institutional-quality market intelligence to your iPhone and Mac. Combining historical pattern recognition with optional on-device LSTM deep learning, it reveals what history suggests about any stock's future — under current market conditions — and can now keep watch on your Watchlist while you're away. WHY SELL IN MAY IS DIFFERENT Unlike simple charting apps, Sell in May is regime-aware: it classifies market conditions (volatility, trend, sentiment, macro regime) 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 data to find similar price patterns from comparable market regimes • Optional LSTM AI Forecasting: Probabilistic predictions for 5, 10, and 20-day horizons, with a clear "unavailable" indicator on the rare occasion the on-device model can't load • Two complementary perspectives reduce prediction bias REGIME-AWARE INTELLIGENCE Automatically detects volatility (Low/Medium/High), trend (Trending/Mean-Reverting/Neutral), risk sentiment (Risk-On/Risk-Off/Neutral), and macro regime (Recession, Slowdown, Recovery, Expansion, Stagflation). Historical patterns are filtered to match YOUR current regime. WATCHLIST & DAILY BRIEF (Optional) • Track the symbols you care about with an opt-in Morning Brief notification • Overnight pattern scanning surfaces real high-confidence matches found across your Watchlist while you slept • Optional mid-day pattern-alert pass for a second check during market hours AI CHAT • Ask questions about any analysis in plain language, powered by an on-device LLM • Conversations persist as you navigate instead of resetting on every tap • Dynamic suggestion chips surface the forecast direction and top historical pattern for the symbol you're viewing FUNDAMENTALS & DCF CALCULATOR • Per-ticker discounted cash flow calculator with live free cash flow / net debt auto-populated from market data • Peer correlation heatmap and risk & performance metrics against a configurable benchmark MACRO-ECONOMIC CONTEXT (Optional) With a FRED API key, integrates Federal Reserve data: interest rates, yield curve, credit spreads, CPI year-over-year, unemployment, sentiment, and recession probability. Patterns from similar economic conditions receive a similarity boost. PROBABILISTIC FORECASTING Never just a single number — always a range: multi-horizon predictions with confidence intervals, return percentiles (10th/25th/median/75th/90th), downside risk probabilities, and expected volatility. 100% PRIVACY-FIRST Complete on-device processing — your data never leaves your phone or Mac. No account, no cloud backend, no tracking. Works offline after initial data fetch. All analytics, forecasting, and AI chat run locally. PROFESSIONAL-GRADE TOOLS 14+ technical indicators, k-NN similarity matching, Core ML inference, Accelerate-framework computation, real-time ticker tape. WHO IT'S FOR Active traders, swing traders, quantitative analysts, privacy-conscious investors, and market students learning how regimes affect prices. DATA SOURCES Yahoo Finance for prices, FRED for economic indicators (optional), Stooq as a historical-data fallback. All data cached locally for offline use. 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. .

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What's New: - Real Pattern Scanning in Daily Brief: The Morning Brief notification used to always report "no patterns found" behind the scenes. It now genuinely scans your Watchlist overnight and tells you about real high-confidence matches. A new optional mid-day pattern check is also available in Settings, for a second look during market hours. - AI Chat Remembers You: Chat conversations no longer reset every time you navigate away and back. Chat also now suggests two smart, tappable prompts based on the forecast direction and top historical pattern for the stock you're viewing. - Smarter Fundamentals: The DCF calculator now pre-fills free cash flow and net debt from live market data for the ticker you're viewing, with a "Live" badge so you can see at a glance which numbers came from the market versus your own edits. - Honest Forecasts: On the rare occasion the on-device forecasting model can't load, the app now clearly shows a "forecast unavailable" indicator everywhere a forecast is shown, instead of silently displaying a placeholder that looks like a real prediction. - Recovery Regime Detection: The market-regime classifier can now recognize an economic "Recovery" phase (improving employment and sentiment) instead of always defaulting to "Slowdown." Improved: - More Accurate Macro Context: Fixed a calculation bug that was silently disabling high-inflation/stagflation detection when economic data came from the Federal Reserve (FRED) source. - Corrected In-App Explanations: The "how this is calculated" text for forecast confidence intervals now matches the app's actual math. - A round of internal reliability, testing, and documentation cleanup, with no user-facing behavior change.

The developer, Erich Champion, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    Erich Champion
    Size
    12.6 MB
    Category
    Finance
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    • iPad
      Requires iPadOS 17.0 or later.
    • Mac
      Requires macOS 14.0 or later.
    • Apple Vision
      Requires visionOS 1.0 or later.
    Languages
    English and Spanish
    Age Rating
    13+
    Copyright
    © 2026 Erich Champion