Privacy Policy

Last updated: April 2026

Who we are

Celiac Sentry is operated by Harwick Digital, a registered Canadian business based in New Brunswick. Contact us at [email protected]

What data we collect

Celiac Sentry is designed with privacy first. We collect the minimum data necessary to provide the service:

• Receipt images: Photos you take are stored permanently in your device's local storage — specifically in the app's documents directory, which is never auto-cleared by Android or iOS. We do not upload your receipt images to our servers. You may choose to manually share images to any cloud service directly from the app.
• Receipt data: Item names, prices, calculations, store names, dates, and tax summaries are stored locally on your device. This data never leaves your device unless you explicitly export it.
• Manually edited data: Any items you add, edit, or mark as verified are stored locally on your device alongside the original AI-detected data.
• Item sharing splits: If you use the shared item splitting feature, the number of people sharing and the resulting eligible amount are stored locally with the receipt.
• Account data: If you create an account, we store your email address and subscription status via Supabase, a PIPEDA-compliant database service hosted in Canada (ca-central-1 region). We do not store payment information — payments are handled entirely by Google Play or Apple App Store.
• Usage data: We collect anonymous scan counts for rate limiting purposes. This data cannot identify you personally.
• Family name: The name you enter during onboarding is stored locally on your device only. It is never transmitted to our servers.
• Claim period preferences: Your chosen tax claim period is stored locally on your device.
• Terms acceptance record: When you tap "I Agree" on the terms acceptance screen, we store the date, time, and version of the terms you accepted both locally on your device and in our secure Supabase database hosted in Canada (ca-central-1). This record exists to confirm your informed consent and to determine whether you need to re-accept updated terms in future.

What we do NOT collect

• We do not sell your data to any third party — ever.
• We do not share your personal financial data with advertisers.
• We do not collect your precise location.
• We do not use your data to train AI models.
• We do not store your receipt images on our servers at any time.
• We do not access any cloud storage you use for manual backups.

Our commitment to your data protection

Celiac Sentry handles health-adjacent and financial data. We take this seriously. Here is why we chose Anthropic as our AI provider specifically for privacy reasons: Unlike some AI providers whose free tiers allow human reviewers to read your submitted data, Anthropic's commercial API — which Celiac Sentry uses — contractually prohibits using your data for model training and limits data retention to 30 days. Your receipt images are processed and immediately discarded. We will never switch to an AI provider with weaker privacy protections without notifying you in advance.

AI processing and explicit consent

When you scan a receipt, the image is compressed on your device then sent to the Anthropic API for processing to identify gluten-free items and extract receipt data. By using the scan feature, you explicitly consent to your receipt images being sent to Anthropic's AI for processing.

Anthropic's commercial API — which is what Celiac Sentry uses — does not use your data to train AI models and retains data for a maximum of 30 days for abuse monitoring purposes only. Receipt images are never stored on Anthropic's servers beyond the immediate processing of your scan. No personally identifying information is sent alongside the image — only the compressed image data itself.

During onboarding, you will be asked to explicitly confirm your understanding and consent to this AI processing before scanning is enabled. You may withdraw consent at any time by discontinuing use of the scan feature. For full details see Anthropic's privacy policy at anthropic.com/privacy and their commercial terms at anthropic.com/legal/commercial-terms.

Third-party AI provider: Anthropic, PBC — 548 Market St, San Francisco, CA 94104, USA. anthropic.com

Receipt image storage and backup

Receipt images are stored in your device's permanent documents directory and will survive cache clearing and app restarts. They will not survive an uninstall or phone replacement unless you manually back them up using the in-app sharing feature. We are not responsible for data loss resulting from device failure, loss, or theft. Automatic cloud backup is planned for a future update.

Your rights under PIPEDA

As a Canadian resident, you have the right to access, correct, or delete your personal information. Since most data is stored locally on your device, you control it directly. For server-held data (email and subscription status), contact [email protected]. We will respond within 30 days.

Data retention

Receipt data and images are stored on your device until you delete them or uninstall the app. Account data is retained while your account is active and for a reasonable period after cancellation. You may request deletion by contacting [email protected]

Children

Celiac Sentry is not directed at children under 13. We do not knowingly collect information from children under 13.

Changes to this policy

We will notify users of material changes via the app with at least 30 days notice. For material changes, we will require users to explicitly re-accept the updated terms before continuing to use the app.

Contact

Privacy questions: [email protected]

Terms of Service

Last updated: April 2026

1. Acceptance

By downloading, installing, or using Celiac Sentry, you agree to these Terms of Service and our Privacy Policy. Upon first launch, you will be presented with an explicit acceptance screen requiring you to tap "I Agree" before using the app. This constitutes your informed, explicit, and legally binding acceptance of these terms. The date, time, and version of your acceptance is recorded locally on your device as proof of consent. If you do not agree, do not use the app.

AI processing consent: The scan feature sends receipt images to Anthropic's AI for processing. During onboarding you will be required to explicitly consent to this before scanning is enabled. Anthropic does not retain or train on your receipt images. Full details are in our Privacy Policy.

2. Description of service

Celiac Sentry is a mobile application that helps users track gluten-free food expenses for Canadian CRA medical expense purposes. Features include AI-powered receipt scanning, manual item editing, shared item splitting, tax claim period optimization, receipt grouping and search, PDF export, and manual backup sharing. It is a tracking and documentation tool only — not a tax filing service, accounting service, or medical service.

3. Not professional advice — read carefully

CELIAC SENTRY DOES NOT PROVIDE PROFESSIONAL TAX, LEGAL, MEDICAL, OR FINANCIAL ADVICE. Specifically:

• Calculations, summaries, and PDF reports are estimates based on publicly available CRA guidance and are not guaranteed to be accurate, complete, or current.
• The AI scanning feature may miss, misidentify, or incorrectly classify items. You are responsible for reviewing and verifying all scanned items using the editing features before saving.
• The optimized claim period calculator is a mathematical tool only and does not constitute tax advice.
• The shared item splitting feature calculates portions based on numbers you enter. You are responsible for ensuring accuracy.
• You are solely responsible for the accuracy and completeness of any tax claim you file with the CRA.
• Always consult a qualified Canadian tax professional before filing.

4. Eligibility

The CRA medical expense claim for gluten-free food requires a formal Celiac disease diagnosis and written certification from a licensed medical practitioner. It is your sole responsibility to confirm eligibility with a qualified tax professional. We make no representation that use of this app guarantees eligibility for or success of any CRA claim.

5. AI scanning accuracy

The AI scanning feature may make errors. Celiac Sentry provides editing tools to correct any errors before saving. You accept full responsibility for reviewing all scan results and correcting inaccuracies before relying on them for tax purposes.

6. Data storage and backup responsibility

Receipt images are stored locally on your device. Celiac Sentry is not responsible for data loss resulting from device loss, theft, damage, uninstallation, factory reset, operating system failures, or any other cause. You are solely responsible for maintaining adequate backups to meet the CRA's 6-year record retention requirement. We strongly recommend regular backups using the in-app sharing feature.

7. Subscription and billing

Celiac Sentry offers a 7-day free trial followed by a paid subscription ($3.99 CAD/month or $29.99 CAD/year during the launch period). Subscriptions are managed through the Google Play Store, with Apple App Store coming soon. Billing, cancellation, and refund policies are governed entirely by Google or Apple's standard subscription terms. You may cancel at any time through your app store account; access continues until the end of the current paid period.

8. Founding member pricing

Founding members retain their launch subscription price for as long as their subscription remains active and uninterrupted. If a founding member cancels, the founding member rate will not apply upon resubscription. Celiac Sentry reserves the right to adjust founding member pricing with 90 days written notice in the event of material and sustained increases in operating costs.

9. User responsibilities

You are responsible for: (a) reviewing and verifying all AI-generated scan results before saving; (b) accurately entering shared item splits; (c) retaining original receipts as required by the CRA for up to 6 years; (d) regularly backing up receipt images; (e) confirming your CRA eligibility; (f) complying with all applicable Canadian tax laws; (g) consulting a qualified tax professional before filing.

10. Acceptable use

You agree not to: submit fraudulent or fabricated receipts; circumvent usage limits or subscription requirements; reverse engineer or copy the application; use the app to facilitate tax fraud or any illegal activity.

11. Privacy

Our Privacy Policy forms part of these Terms. By using the app you agree to our Privacy Policy.

12. Limitation of liability — personal protection

TO THE MAXIMUM EXTENT PERMITTED BY APPLICABLE CANADIAN LAW:

• Celiac Sentry and its operator are not liable for any tax assessment, penalty, interest charge, audit outcome, or financial loss arising from use of this app.
• Celiac Sentry is not liable for any data loss including loss of receipt images or data.
• Celiac Sentry is not liable for AI scanning errors, omissions, or misidentifications.
• Celiac Sentry is not liable for any CRA audit, reassessment, or denial of claims.
• Our total liability shall not exceed the total subscription fees you paid in the 12 months preceding any claim.
• The app is provided "as is" without warranty of any kind, express or implied.

13. Indemnification

You agree to indemnify and hold harmless Celiac Sentry and its operator from any claims, damages, losses, or expenses arising from your use of the app, your violation of these Terms, any tax claim you file using app data, or your violation of any applicable law.

14. Dispute resolution

Disputes shall first be attempted through good faith negotiation. If unsuccessful, disputes sha