Privacy Policy

Effective Date: December 2024

🔒 Your Privacy is Our Priority

Sell in May processes all data locally on your device. We do not collect, store, or transmit any personal information. Your market analysis stays completely private.

1. Introduction

Welcome to Sell in May. We are committed to protecting your privacy. This privacy policy explains how Sell in May handles data—or more accurately, how we don't handle your personal data, because we don't collect any.

✅ No Data Collection

Sell in May does not collect any personal information. We do not:

Collect your name, email, or any identifying information
Require user accounts or registration
Track your usage or behavior
Use analytics or tracking services
Share data with third parties (because we have no data to share)
Store your stock selections or analysis history on our servers

2. Local Processing

💻 100% On-Device Processing

All analysis runs entirely on your iPhone. Your device does all the work:

Market regime detection
Pattern matching algorithms
AI forecasting (if enabled)
Technical indicator calculations
Probabilistic scenario generation

No data is sent to external servers for processing. Everything happens locally on your device.

3. Internet Usage

Sell in May only uses the internet to retrieve public market data from free data sources:

Yahoo Finance - For current and historical stock prices
FRED (Federal Reserve Economic Data) - For economic indicators (optional, requires your API key)
Stooq - As a fallback source for extended historical data

Important: The app only downloads publicly available market data. It does not send any information about you, your device, or your usage to these services.

4. Data Storage

All data is stored locally on your device:

Market Data Cache - Stock prices and economic indicators are cached locally for offline access
App Settings - Your preferences and configuration are stored on your device
FRED API Key - If you provide a FRED API key, it is stored securely in your device's keychain (not transmitted to us)

We do not have access to any of this data. It exists only on your device and is never transmitted to our servers (because we don't have any servers).

5. What We Don't Do

To be completely clear, Sell in May does not:

❌ Collect personal information
❌ Require user accounts
❌ Use cloud services or backends
❌ Track your activity or usage
❌ Use analytics or tracking SDKs
❌ Share data with advertisers or third parties
❌ Store your stock selections or analysis history
❌ Send any data to external servers (except public market data requests)

6. Third-Party Services

Sell in May accesses the following public data sources:

Yahoo Finance - Public market data API
FRED (Federal Reserve) - Public economic data API (optional, requires your API key)
Stooq - Public financial data API

These are public APIs that provide market data. We do not send any information about you to these services—only requests for publicly available market data.

Note: When you use FRED integration, you provide your own API key directly to the app. We never see or store your API key—it's stored securely in your device's keychain.

7. Data Retention and Deletion

Since all data is stored locally on your device:

You control all data retention
Deleting the app removes all cached data and settings
You can clear cached market data at any time through Settings
We don't retain any data because we don't collect any

8. Your Rights

You have complete control:

Access: All data is on your device—you can view it anytime
Delete: Delete the app or clear data through Settings
Control: Configure what data is cached and when
Privacy: Your analysis is completely private—we can't see it because it never leaves your device

9. Children's Privacy

Our app does not collect any information from anyone, including children. Since we don't collect data, we don't collect data from children either. The app is suitable for users of all ages who are interested in market analysis.

10. Security

Since all processing happens on your device and no data is transmitted:

Your data security depends on your device's security
We recommend using standard iOS security features (passcode, Face ID, Touch ID)
No data is at risk from our servers because we don't have any
Your FRED API key (if provided) is stored in iOS Keychain, Apple's secure storage system

11. Changes to This Privacy Policy

We may update this privacy policy from time to time to reflect changes in the app or clarify our practices. We will notify you of any material changes by posting the new privacy policy on this page and updating the "Effective Date" at the top. Since we don't collect contact information, we can't email you about changes—please check this page periodically.

12. Contact Us

If you have any questions about this privacy policy or our data practices (or lack thereof), please contact us:

Email: sell-in-may+support@erichchampion.com

Support: https://www.sell-in-may.com/support

Summary

Sell in May is designed for complete privacy:

✅ All processing happens on your device
✅ No data collection whatsoever
✅ No user accounts or registration
✅ No tracking or analytics
✅ Internet only used for public market data
✅ Your analysis stays completely private

Your market intelligence deserves the same privacy as your portfolio. With Sell in May, you get professional analysis with complete data sovereignty.

This privacy policy is effective as of December 2024. Last updated: December 2024.