Privacy Policy

Effective Date: October 20, 2025
Last Updated: October 20, 2025

TechTenstein ("we," "us," or "our") operates the CaloriScan mobile application (the "App"). This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our App.

By using CaloriScan, you agree to the collection and use of information in accordance with this Privacy Policy.

1. Information We Collect

1.1 Personal Information You Provide

• Health & Nutrition Data: Weight, height, BMI, nutrition goals, dietary preferences, and meal logs

• Food Images: Photos of meals you upload for AI analysis

• User Input: Questions, queries, and messages sent to our AI Diet Coach

• Progress Data: Weight history, calorie intake, hydration records

1.2 Automatically Collected Information

• Device Information: Device model, operating system version, unique device identifiers

• Usage Data: App features used, session duration, interaction patterns

• Analytics Data: Crash reports, performance metrics (via Google AdMob)

1.3 Camera & Storage Permissions

• Camera Access: Required for food scanning and barcode scanning features

• Storage Access: Required to save and retrieve food images and app data

2. How We Use Your Information

We use your information to:

• Provide AI-Powered Features: Analyze food images, generate diet recommendations, create meal plans

• Track Progress: Monitor your nutrition intake, weight changes, and hydration levels

• Personalize Experience: Customize diet suggestions based on your goals and preferences

• Search Food Database: Query Open Food Facts API for nutritional information

• Display Advertisements: Show personalized ads via Google AdMob and Unity Ads

• Improve Services: Analyze app usage to enhance features and fix bugs

• Comply with Legal Obligations: Meet regulatory requirements when necessary

3. Third-Party Services

CaloriScan integrates with the following third-party services:

3.1 Google Gemini AI (Gemini 2.5 Flash)

• Purpose: AI food recognition, diet coaching, meal planning, hydration insights

• Data Shared: Food images (base64 encoded), user queries, nutrition data

• Privacy Policy: 

• https://policies.google.com/privacy

3.2 Open Food Facts API

• Purpose: Food database search and nutritional information

• Data Shared: Search queries, product names

• Privacy Policy: 

• https://world.openfoodfacts.org/privacy-policy

3.3 Google AdMob

• Purpose: Display advertisements

• Data Shared: Device ID, usage data, advertising ID

• Privacy Policy: 

• https://policies.google.com/privacy

3.4 Unity Ads

• Purpose: Ad mediation and display

• Data Shared: Device information, ad interaction data

• Privacy Policy: 

• https://unity.com/legal/privacy-policy

4. Data Storage and Security

4.1 Local Storage

• All nutrition data, food logs, and images are stored locally on your device using SQLite database

• We do NOT upload your personal data to our servers

• Data remains on your device unless you uninstall the app

4.2 Security Measures

• Food images sent to Google Gemini AI are transmitted over encrypted HTTPS connections

• We implement industry-standard security practices to protect your data

• However, no method of transmission over the internet is 100% secure

5. Data Sharing and Disclosure

We DO NOT sell, trade, or rent your personal information to third parties.

We may share your information only in the following circumstances:

• With Your Consent: When you explicitly agree to data sharing

• Third-Party APIs: Food images and queries sent to Google Gemini AI for analysis

• Legal Compliance: When required by law, court order, or government regulation

• Service Providers: AdMob and Unity Ads for advertising purposes

6. Children's Privacy

CaloriScan is NOT intended for children under the age of 13. We do not knowingly collect personal information from children under 13. If you are a parent or guardian and believe your child has provided us with personal information, please contact us, and we will delete such information.

7. Your Data Rights

You have the right to:

• Access Your Data: View all data stored locally on your device

• Delete Your Data: Uninstall the app to permanently remove all local data

• Opt-Out of Ads: Use your device settings to limit ad tracking

• Withdraw Consent: Stop using features that require data sharing

How to Delete Your Data:

1. Go to your device's app settings

2. Select CaloriScan

3. Tap "Clear Data" or "Clear Storage"

4. Uninstall the app

8. Advertising and Analytics

8.1 Personalized Ads

• We use Google AdMob and Unity Ads to display advertisements

• These services may collect your advertising ID and device information

• Ads may be personalized based on your interests

8.2 Opt-Out Options

• Android: Settings > Google > Ads > Opt out of Ads Personalization

• iOS: Settings > Privacy > Advertising > Limit Ad Tracking

9. International Data Transfers

Your data may be transferred to servers located outside your country when using:

• Google Gemini AI (servers in the United States and other countries)

• Open Food Facts API (servers in France)

We ensure appropriate safeguards are in place for such transfers.

10. Data Retention

• Local Data: Retained on your device until you delete it or uninstall the app

• AI Queries: Google Gemini AI may temporarily cache your queries for processing but does not store them permanently

• Analytics Data: AdMob retains usage data according to their retention policies

11. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Changes will be effective immediately upon posting the updated policy in the app. We will notify you of significant changes through:

• In-app notifications

• Updated "Last Updated" date at the top of this policy

Your continued use of the app after changes indicates acceptance of the updated policy.

12. Contact Us

If you have questions, concerns, or requests regarding this Privacy Policy, please contact us:

Email: contact@techtenstein.com
Developer: TechTenstein
App Name: CaloriScan
Package Name: com.techtenstein.caloriscan

13. Consent

By using CaloriScan, you acknowledge that you have read, understood, and agree to this Privacy Policy and our collection, use, and disclosure of your information as described herein.