CalvinCalvin

Privacy Policy

Last updated: January 23, 2026

1. Introduction

Calvin ("we", "our", or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application and website (collectively, the "Service").

2. Information We Collect

Information You Provide

  • Account Information: Email address, name, and authentication data when you create an account
  • Profile Information: Weight history, calorie and macro targets, activity level, and wellness goals you set in the app
  • Health Data: With your permission, we read activity data from Apple Health to calculate calorie needs and write nutrition data back to keep your health records synchronized
  • Food Photos: Images you upload for nutritional analysis
  • Food Logs: Meal entries, nutritional data, and dietary notes
  • Payment Information: Processed securely through our payment provider (Stripe)

Information Collected Automatically

  • Device Information: Device type, operating system, and unique device identifiers
  • Usage Data: Features used, time spent, and interaction patterns
  • Behavioral Analytics: We track how you interact with the app including features used, actions taken (such as logging meals, viewing insights), and timing. This data is linked to your account to understand usage patterns and improve the Service
  • Push Notifications: Device tokens for sending notifications, delivery status, and your notification preferences including reminder times

3. How We Use Your Information

We use your information to:

  • Provide and maintain the Service
  • Analyze food photos and provide nutritional estimates
  • Calculate personalized calorie and macro targets
  • Track your progress and provide insights
  • Process payments and manage subscriptions
  • Send important updates about the Service
  • Improve our AI models and Service quality
  • Respond to your requests and support inquiries
  • Track email delivery status to ensure you receive important communications

4. AI Processing

When you upload food photos, they are processed by AI services to analyze nutritional content. These images may be temporarily processed by third-party AI providers (Google AI) to provide nutritional estimates. We do not use your photos to train AI models without your explicit consent.

AI Improvement: When you correct nutritional estimates, we store the original AI prediction and your correction to improve accuracy. Our team may review corrections for quality assurance.

5. Data Sharing

We may share your information with:

  • Service Providers: Third parties that help us operate the Service (hosting, analytics, payment processing)
  • AI Providers: For food image analysis (processed according to their privacy policies)
  • Crash Reporting (Sentry): For error monitoring, we collect crash reports that may include device info, app state, and user identifiers to diagnose and fix issues
  • Legal Requirements: When required by law or to protect our rights

We do not sell your personal information to third parties.

6. Data Security

We implement appropriate technical and organizational measures to protect your information, including encryption in transit and at rest, secure authentication, and regular security assessments. However, no method of transmission over the Internet is 100% secure.

7. Data Retention

We retain your data as follows:

  • Account, Food Logs, and Photos: Retained while your account is active; permanently deleted when you delete your account
  • Payment Records: Retained for 7 years as required by tax law, even after account deletion

When you delete your account, a 30-day grace period begins. After this period, all personal data is permanently deleted, except for payment records we are legally required to retain.

8. Your Rights

Depending on your location, you may have the right to:

  • Access the personal information we hold about you
  • Correct inaccurate information
  • Delete your account and personal information
  • Export your data in a portable format
  • Opt out of certain data processing activities
  • Withdraw consent where processing is based on consent

Data Export

You can request a copy of all your data through the app settings. Your export will include your profile, food logs, photos, and goals in JSON format. Export files are available for download for 7 days after generation.

Account Deletion

You can request account deletion through the app or by contacting us. When you request deletion:

  • A 30-day grace period begins during which you can cancel the request
  • During this period, you will not be able to access your account
  • After 30 days, all data is permanently deleted including photos, food logs, and account information
  • To cancel a deletion request, contact us before the grace period ends

To exercise these rights, contact us at privacy@calvin.vip.

9. Children's Privacy

The Service is not intended for children under 13 years of age. We do not knowingly collect personal information from children under 13. If you believe we have collected information from a child under 13, please contact us immediately.

10. International Data Transfers

Your information may be transferred to and processed in countries other than your country of residence. We ensure appropriate safeguards are in place to protect your information in accordance with applicable data protection laws.

11. Changes to This 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. Continued use of the Service after changes constitutes acceptance of the updated policy.

12. Contact Us

If you have questions about this Privacy Policy or our data practices, please contact us at privacy@calvin.vip.