Privacy Policy
Last updated: April 10, 2026
Overview
StackCheck ("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 short version: We collect only what's necessary to provide you with personalized nutrition insights. We don't sell your data. Your food photos are processed for nutrient analysis and are not stored permanently on our servers.
Information We Collect
Account Information
When you create an account, we collect:
- Email address
- Name (if provided)
- Authentication credentials (securely managed via AWS Cognito or social sign-in providers)
Health & Nutrition Data
To provide personalized insights, we collect:
- Food logs (meals you photograph or manually enter)
- Supplement information you track
- Health goals you select during onboarding
- Nutrient intake calculated from your food logs
Photos
When you photograph a meal, the image is sent to our servers for AI-powered food recognition. Photos are processed in real-time and are not stored permanently. We retain only the extracted nutritional data, not the original images.
Device & Usage Information
We automatically collect:
- Device type and operating system
- App version
- General usage patterns (screens visited, features used)
- Crash reports and performance data
How We Use Your Information
- Provide the Service: Analyze your food intake, track nutrients, and generate personalized recommendations.
- Improve the App: Understand how features are used to make StackCheck better.
- Communicate: Send important updates about your account or the service.
- Support: Respond to your questions and troubleshoot issues.
Data Sharing
We do not sell your personal information. We may share data with:
- Service Providers: Third parties that help us operate (cloud hosting via AWS, payment processing via RevenueCat/Google Play, AI services via Anthropic). These providers are bound by confidentiality agreements.
- Legal Requirements: If required by law or to protect our rights and safety.
Data Security
We use industry-standard security measures including encryption in transit (TLS) and at rest. Your account is protected by secure authentication through AWS Cognito. However, no system is 100% secure, and we cannot guarantee absolute security.
Data Retention
We retain your data for as long as your account is active. If you delete your account, we will delete your personal data within 30 days, except where retention is required by law or for legitimate business purposes (e.g., fraud prevention).
Your Rights
You have the right to:
- Access the personal data we hold about you
- Request correction of inaccurate data
- Request deletion of your data
- Export your data in a portable format
To exercise these rights, contact us at hello@alchemy-digital.io.
Children's Privacy
StackCheck is not intended for children under 13. We do not knowingly collect personal information from children under 13. If you believe we have collected such information, please contact us immediately.
Changes to This Policy
We may update this Privacy Policy from time to time. We will notify you of significant changes via the app or email. Continued use of StackCheck after changes constitutes acceptance of the updated policy.
Contact Us
If you have questions about this Privacy Policy, please contact us at: