Regime-aware · Probabilistic · Private

Professional market intelligence, completely private.

On-device regime detection, pattern matching, and AI forecasting for serious investors. No accounts. No cloud. No tracking — everything runs on your iPhone and Mac.

100% on-device processing — your data never leaves your device.

Sell in May market analysis screen Sell in May market analysis screen
10

Years of history

Pattern matching scans a focused decade of price action — longer windows add noise, not signal — all filtered to comparable market regimes.

14+

Technical indicators

RSI, MACD, Bollinger Bands, ATR, OBV and more — all computed on-device.

0

Accounts or trackers

No sign-up, no analytics, no servers. Your market intelligence stays yours.

What's inside

A complete analysis engine in your pocket.

Everything below runs locally. The internet is used only to fetch public market data.

100% Privacy-First

All analysis runs on your device. No cloud backend. No data collection. No tracking. Your FRED API key, if you add one, is stored in the iOS Keychain — never transmitted. No subscriptions. No cloud. No compromise.

Available now

Get Sell in May for iOS & macOS.

Download today and start making more informed, regime-aware decisions — with complete data sovereignty.

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From the Sell in May family

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Envelope budgeting and retirement planning that stays on your device — the same privacy-first approach, applied to your everyday money.

Visit by-envelope.sell-in-may.com