Privacy Policy

Last updated: January 2026

Welcome to Calk ("we," "our," or "us"). We are committed to protecting your privacy and ensuring you have a positive experience when using our AI-powered calorie tracking application. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application.

1. Information We Collect

1.1 Information You Provide

When you use Calk, you may provide us with:

  • Personal Information: Age, gender, height, weight, and activity level for calculating personalized calorie goals
  • Food Images: Photos of meals you upload for AI analysis
  • Meal Data: Information about your meals, including calories and macronutrients
  • Contact Information: Email address if you contact us for support

1.2 Automatically Collected Information

We automatically collect certain information when you use the app:

  • Device Information: Device type, operating system version, unique device identifiers
  • Usage Data: App interactions, features used, and time spent in the app
  • Analytics Data: Aggregated usage statistics through Mixpanel

2. How We Use Your Information

We use the collected information for the following purposes:

  • Provide Services: To deliver calorie tracking features and AI food analysis
  • Personalization: To calculate your personalized daily calorie and macro goals
  • Improvement: To analyze usage patterns and improve our app and AI accuracy
  • Support: To respond to your inquiries and provide customer support
  • Communications: To send you important updates about the app or service

3. Data Storage and Security

3.1 Device-Based Authentication

Calk uses device-based authentication, which means we don't require you to create an account with an email or password. Your data is associated with your device identifiers and securely stored.

3.2 Data Security

We implement appropriate technical and organizational security measures to protect your personal information against unauthorized access, alteration, disclosure, or destruction. These measures include:

  • Secure HTTPS connections for all data transmissions
  • Encrypted storage of sensitive information
  • Regular security assessments and updates
  • Limited access to personal data by authorized personnel only

3.3 Data Retention

We retain your personal information for as long as your account is active or as needed to provide you services. If you delete the app or request data deletion, we will remove your personal data within 30 days, except where we are required to retain it for legal purposes.

4. Third-Party Services

We use the following third-party services that may collect and process your data:

4.1 AI Analysis (Google Gemini)

Food images you submit are processed by Google's Gemini AI for analysis. Google's privacy policy applies to this processing. Images are processed in real-time and are not permanently stored by the AI service.

4.2 Analytics (Mixpanel)

We use Mixpanel to collect anonymous usage analytics to improve our app. This data is aggregated and does not personally identify you.

4.3 Payment Processing (RevenueCat)

If you subscribe to Calk Premium, payments are processed through Apple's App Store with RevenueCat. We do not store or have access to your payment card details.

5. Your Rights and Choices

Depending on your location, you may have the following rights:

  • Access: Request access to the personal data we hold about you
  • Correction: Request correction of inaccurate personal data
  • Deletion: Request deletion of your personal data
  • Portability: Request a copy of your data in a portable format
  • Opt-out: Opt out of certain data processing activities

To exercise any of these rights, please contact us at contact@apps.arslanturk.dev.

6. Children's Privacy

Calk is not intended for children under the age of 13 (or 16 in the European Economic Area). We do not knowingly collect personal information from children. If you believe we have collected information from a child, please contact us immediately.

7. International Data Transfers

Your information may be transferred to and processed in countries other than your country of residence. These countries may have data protection laws that are different from the laws of your country. We ensure appropriate safeguards are in place to protect your information in compliance with applicable data protection laws.

8. Changes to This Privacy Policy

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

9. Contact Us

If you have any questions about this Privacy Policy or our data practices, please contact us: