Overview
Modern Master Key is a free iOS app that provides access to Charles F. Haanel's 1912 personal development course, "The Master Key System." We are committed to protecting your privacy.
Simple truth: We don't collect, store, or transmit any of your personal data.
Information Collection and Use
Modern Master Key does not collect, store, or transmit any personal information. The app operates entirely on your device, and all data remains local to your iPhone or iPad.
Data Stored Locally on Your Device
The following information is stored locally on your device and never leaves your device:
- Reading Progress: Which lessons you've completed
- App Settings: Your preferences for dark mode, text size, and other display options
This data is not accessible to us and is not transmitted over the internet.
Third-Party Services
Modern Master Key does not integrate with any third-party analytics, advertising, or tracking services.
Children's Privacy
Our app does not knowingly collect any personal information from anyone, including children under 13 years of age.
Changes to This Privacy Policy
We may update our Privacy Policy from time to time. We will notify you of any changes by posting the new Privacy Policy on this page and updating the "Last updated" date.
Contact Us
If you have any questions about this Privacy Policy, please contact us at:
Hartshorne Works LLC
Email: privacy@modernmasterkey.com