Privacy Policy

Last Updated: January 28, 2026

Keto Macro Tracker ("we," "our," or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, and safeguard your information when you use our mobile application (the "App").

1. Information We Collect

1.1 Information You Provide

We collect information that you voluntarily provide when using the App, including:

Profile Information: Age, weight, height, activity level, and health goals
Food Logging Data: Foods you log, serving sizes, meal times, and custom meals you create
Nutrition Data: Daily macro intake (calories, protein, carbs, fat) and water intake

1.2 Automatically Collected Information

The App automatically collects certain information to provide functionality:

Device Information: Device type, operating system version, and unique device identifiers
App Usage Data: Features you use, time spent in the App, and API usage statistics (stored locally only)

1.3 Third-Party Services

The App uses the following third-party services:

USDA FoodData Central API: To search for food nutrition information. Search queries may be logged by the USDA service.
OpenFoodFacts API: As a fallback for food nutrition data and barcode scanning. This is a public, open-source database.
Google AdMob: To display advertisements. AdMob may collect device identifiers, IP address, device information, and ad interaction data. See Google's Privacy Policy and AdMob's data usage for more details.

1.4 Apple Health Integration (Optional)

If you grant permission, the App may:

Read from HealthKit: Weight, body fat percentage, and lean body mass
Write to HealthKit: Dietary protein, carbohydrates, fat, calories, and water intake

HealthKit data remains on your device and is never transmitted to us or any third parties.

2. How We Use Your Information

We use the collected information to:

Provide and maintain the App's core functionality
Calculate your personalized macro goals based on your profile
Display your daily nutrition progress and historical trends
Show relevant advertisements (via Google AdMob) to support the free app
Improve app performance and fix bugs

3. Data Storage and Security

3.1 Local Storage

All your data (food logs, profile information, nutrition data) is stored locally on your device using:

UserDefaults: For app settings and preferences
Core Data: For food logs and historical data
App Groups: For sharing data with widget extensions (only on your device)

3.2 Data Security

We take reasonable measures to protect your data:

All data is encrypted at rest on your device using iOS system encryption
No data is transmitted to external servers except for food database API queries
We do not maintain any backend servers or databases
All API requests are made directly from your device

4. Data Sharing

We do not sell, rent, or share your personal information with third parties except:

Food Database APIs: When you search for foods, your search queries are sent to USDA FoodData Central or OpenFoodFacts. These services may log queries according to their own privacy policies.
Google AdMob: Ad providers (including Google) receive device and advertising-related data to deliver and measure ads. Their use of data is governed by their own privacy policies.
Legal Requirements: If required by law or to protect our rights, we may disclose information to comply with legal obligations.

5. Third-Party Links

The App may contain links to external websites (such as our privacy policy, terms of use, or support pages). We are not responsible for the privacy practices of external websites. We encourage you to review their privacy policies.

6. Data Retention

Your data is retained on your device until:

You delete the App (which removes all local data)
You manually delete data within the App
You request data deletion (see Section 7)

We do not maintain copies of your data after you delete the App.

7. Your Rights

You have the following rights regarding your data:

Access: You can view all your data within the App or export it via the Data Export feature
Deletion: You can delete your data by uninstalling the App or using the in-app data export/delete features
Correction: You can update your profile information at any time in the App's settings
Opt-Out: You can disable HealthKit integration in iOS Settings > Privacy > Health > Keto Macro Tracker. You can limit ad tracking in iOS Settings > Privacy & Security > Tracking.

8. Children's Privacy

The App is not intended for children under the age of 13. We do not knowingly collect personal information from children under 13. If you become aware that a child has provided us with personal information, please contact us so we can delete it.

9. Advertising

The App displays ads through Google AdMob. By using the App, you may see:

Interstitial ads: Full-screen ads shown periodically (e.g., after logging food)
Rewarded ads: Optional ads you can watch for benefits (e.g., ad-free experience for the rest of the day)

AdMob may collect data such as device identifiers, IP address, and ad interactions to personalize and measure ads. You can limit ad tracking in iOS Settings > Privacy & Security > Tracking. For more information, see Google's Privacy Policy.

10. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. We will notify you of any changes by:

Updating the "Last Updated" date at the top of this policy
Posting the new Privacy Policy on this page
Informing you through the App if significant changes are made

You are advised to review this Privacy Policy periodically for any changes.

11. Contact Us

If you have any questions about this Privacy Policy or wish to exercise your rights, please contact us:

GitHub Issues: Submit an issue on GitHub

App Support: Use the in-app support feature or visit our support page

12. Consent

By using the App, you consent to this Privacy Policy and agree to its terms. If you do not agree with this policy, please do not use the App.