Privacy Policy

Overview

DiamondCheck AI (“we”, “our”, “the app”) is committed to protecting your privacy. This policy explains what data we collect, how we use it, and your rights regarding that data.

Data We Collect

We collect the following data to provide and improve our service:

• Device identifier — A randomly generated UUID stored on your device, used to manage your credit balance and link scan history. This is not tied to your Apple ID or personal identity.
• Certificate scan data — When you scan a GIA certificate, we process the extracted diamond specifications (carat, color, clarity, cut, measurements, GIA report number) to generate your report.
• Clarity plot images — If you capture a clarity plot, the image is sent to our server for AI analysis and is not stored after processing.
• Scan logs — We log scan events (timestamp, diamond specifications, device ID) to monitor service health and improve accuracy.
• Purchase records — When you purchase credits through the App Store, we receive a transaction verification from Apple. We do not receive or store your payment details.
• Correction submissions — If you submit a pricing correction, we log the correction details to improve our data.
• Device locale data — We collect your device's country code and timezone settings to understand where our users are located. This data is derived from your device's locale settings, not GPS or IP address, and is stored anonymously (linked only to a random device identifier, not your name or Apple ID).
• Anonymous usage data — We collect anonymized usage data such as feature interactions, scan frequency, and report generation patterns. This data is not tied to your identity and is used solely to improve the app experience.

How We Use Your Data

• Report generation — Certificate data is processed server-side to calculate pricing, find comparable diamonds, and analyze clarity plots.
• Credit management — Your device ID links to a server-side credit ledger that tracks your available report credits.
• Service improvement — Aggregated, anonymized scan data helps us improve pricing accuracy and OCR reliability.
• Support — If you contact us, we may reference your scan logs to help resolve issues.

Data We Do Not Collect

• Your name, email address, or phone number (unless you contact us directly)
• Your precise location data (GPS, Wi-Fi, or IP-based geolocation)
• Contacts, photos, or other device data outside of certificate scanning
• Any data from other apps on your device

Third-Party Sharing

We do not sell, rent, or trade your personal data to third parties. Your data may be processed by:

• Supabase — Our backend infrastructure provider, which hosts our database and serverless functions.
• Anthropic (Claude AI) — Certificate images and clarity plots are sent to Anthropic's API for AI-powered analysis. Anthropic's data processing is governed by their privacy policy.
• Apple — Purchase verification is handled through Apple's StoreKit framework.

Data Retention

Scanned diamond data is stored locally on your device and persists until you delete the app. Server-side scan logs are retained for up to 12 months. Clarity plot images are processed in real-time and not stored on our servers after analysis is complete.

Data Security

Credit balances are stored in your device's Keychain with HMAC integrity verification. All network communication uses HTTPS/TLS encryption. Server-side data is hosted on Supabase's secure infrastructure.

Your Rights

You may request to:

• Know what data we hold associated with your device ID
• Delete all data associated with your device ID
• Receive a copy of your data in a portable format

To exercise these rights, contact us at the email below.

Children's Privacy

DiamondCheck AI is not directed at children under 13. We do not knowingly collect data from children.

Changes to This Policy

We may update this policy from time to time. Material changes will be communicated through the app or on this page.

Contact Us

For privacy-related requests or questions: