Privacy Policy

Last Updated: November 2, 2025

Data We Collect

Supplements Tracker: SmartStack stores the following data:

• Product Information: Supplement names, brands, UPC codes, serving sizes, and ingredient details
• Your Stack: Personal supplement lists, dosages, schedules, and cycle information
• Intake History: Records of when you took supplements (dates, times, amounts)
• Daily Logs: Subjective metrics (energy, sleep, stress levels) and notes
• User Preferences: App settings and preferences

All data is stored locally on your device using Core Data.

iCloud Sync

When iCloud Sync is enabled:

• Your supplement stack, intake events, and daily logs sync automatically across your Apple devices via iCloud Private Database
• Data is encrypted in transit and at rest
• Only you can access your data (Apple handles authentication)
• You can disable iCloud Sync at any time in Settings
• Disabling sync does not delete your local data

No Third-Party Analytics or Tracking

We do NOT:

• Collect analytics or usage statistics
• Use third-party analytics services
• Display advertisements
• Track your behavior across apps or websites
• Sell or share your data with third parties
• Use cookies or tracking technologies

The only external service we use is the NIH Dietary Supplement Label Database (DSLD) for product information lookups, which does not involve transmitting your personal data.

Your Control

You have full control over your data:

• Delete Data: Use "Clear All Data" in Settings to remove all local data
• Export Data: Pro users can export their data as CSV or PDF files
• Disable Sync: Turn off iCloud Sync at any time
• Account Removal: Since we don't require accounts, there's no account to delete. Simply delete the app to remove all data.

For subscription management, use the "Manage Subscription" option in Settings or visit the App Store.

Data Security

We take data security seriously:

• All data is stored locally on your device
• iCloud sync uses Apple's encrypted Private Database
• No data is transmitted to our servers
• We don't have access to your personal information

Changes to This Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by updating the "Last Updated" date above.

Contact

If you have questions about this Privacy Policy, please contact us through the App Store review process or your preferred contact method.