Privacy Policy

MCAS & Histamine Recipes

Last updated: August 24, 2026

This Privacy Policy explains how Lion, LLC ("Lion," "we," "us," or "our") collects, uses, and safeguards information when you use the MCAS & Histamine Recipes mobile application (the "App").

By using the App, you consent to the practices described in this Privacy Policy. This Privacy Policy is part of and subject to our Terms of Use.

1. Our Approach to Privacy

MCAS & Histamine Recipes is designed with privacy in mind. The App:

• Does not require an account or login
• Does not collect your name, email address, or other personal information
• Does not use advertising services or third-party analytics kits
• Does not access your camera, photos, or microphone
• Does not send anything you do to an artificial-intelligence service

2. Information We Collect

2.1 Data Stored on Your Device

The App stores a small amount of data locally on your device using AsyncStorage (a standard on-device storage mechanism). This includes:

• Your favorite recipes
• Your grocery list items and their checked/unchecked state
• The dietary filters you have selected
• App preferences (such as whether you have completed the welcome screens)
• A cached copy of the recipe list so the App works offline
• A randomly generated device identifier and an anonymous session token (see Section 2.2). Neither is your name, email, or any personal identity.

Your grocery list, filter selections, and app preferences never leave your device and are deleted when you uninstall the App.

2.2 Anonymous Account and Automatically Collected Information

When you first open the App, it creates an anonymous account on our backend: a random identifier with no name, email address, password, or other personal details attached. The App also uses a device identifier (Apple's identifier for vendor, or a random identifier generated on your device if that is unavailable). Under these identifiers we may collect:

• Device type, operating system, and app version
• Usage events: app opens, screens viewed, recipes opened, favorites added or removed, filters applied, whether the upgrade screen was shown, and taps on locked recipes
• Your answers to the short welcome survey (the symptoms you selected, the foods you avoid, and how often you cook), which the App uses to preset your dietary filters
• A copy of your favorite recipes (recipe names only), kept with your anonymous account
• Your purchase state: whether an active subscription or a lifetime purchase exists for your anonymous account (see Section 2.3)

This data is associated with the anonymous identifiers described above, not your name, email, or any personal information. It is used solely to operate, maintain, and improve the App.

2.3 Purchases

Subscriptions and the lifetime purchase are sold and processed by Apple through the App Store. We do not receive or store your payment card details. To recognize your purchase across app launches, reinstalls, and devices, purchase receipts are validated by RevenueCat, a subscription-management service, which links the purchase to your anonymous account identifier. RevenueCat and Apple process this information under their own privacy policies.

2.4 Notifications

The App can remind you about your free trial and suggest recipes when you have not opened it for a while. These reminders are scheduled on your device; no server sends them. Notifications are optional and only appear if you allow them in the system prompt. If you do allow them, the App may store a push notification token with your anonymous account so that we can send notifications in the future; we do not currently send any notifications from our servers, and you can turn notifications off at any time in your device's Settings.

2.5 Recipe Content

The recipes in the App are served from histaminetracker.com, a website operated by Lion, LLC. The App ships with a copy of the recipe library and periodically refreshes it, and loads full-size recipe photos, from histaminetracker.com. These are standard web requests: like visiting any website, they transmit your device's IP address to that site's hosting provider. No account, favorites, or survey answers are sent with these requests.

3. How We Use Information

We use collected information to:

• Provide, operate, and improve the App
• Recognize your purchase and unlock the recipes you have paid for
• Monitor usage patterns to improve user experience
• Comply with legal obligations

4. Information We Do Not Collect

To be clear, we do not collect:

• Names, email addresses, or other personal identifiers
• Personal health records or diagnoses (the welcome survey asks a few general multiple-choice questions and does not ask you to log your health history)
• Location data
• Advertising IDs
• Camera, photo, microphone, or audio input
• Payment card details

5. Data Sharing and Disclosure

We do not sell your personal data.

We may share information only in the following limited circumstances:

• With service providers who help operate the App (e.g., hosting), under confidentiality obligations
• If required by law, regulation, legal process, or governmental request
• To protect the rights, safety, or property of Lion, our users, or others

Third-party services we use are:

• Cloud hosting and backend (Supabase), which stores the anonymous account, usage events, survey answers, favorites, and purchase state described in Section 2
• Subscription management (RevenueCat), which receives your anonymous account identifier and purchase receipts to validate and recognize purchases
• Apple, which processes payments through the App Store

These providers process the data only to deliver the App and under their own privacy policies. We do not sell your data to them or to anyone else. The App does not use any artificial-intelligence provider.

6. Data Retention

We retain your information only for as long as necessary to:

• Provide the App
• Fulfill the purposes described in this Policy
• Comply with legal and regulatory obligations

You can delete your data at any time within the App using "Delete My Data" (Profile > Delete My Data). This deletes your anonymous account, your favorites, and your purchase-state record from our backend, removes the link between your usage events and your account, and clears your favorites and filters on your device. The App then starts a fresh anonymous account. Deleting your data does not cancel an Apple subscription; manage that in your App Store account settings. You may also request deletion by contacting us at the email listed below, subject to applicable legal requirements.

7. Data Security

We use reasonable administrative, technical, and organizational safeguards designed to protect your information. However, no system is completely secure, and we cannot guarantee absolute security.

8. Your Choices and Rights

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

• Access the information we hold about you
• Request correction or deletion of your data
• Delete your data directly within the App (Profile > Delete My Data)
• Withdraw consent where applicable

You can exercise these rights by contacting us at the email listed below.

California residents may have additional rights under the CCPA. EU residents may have rights under GDPR. Contact us to exercise these rights.

9. Children's Privacy

The App is intended for users aged 18 and older. We do not knowingly collect personal data from children under 13. If we learn such data has been collected, we will delete it promptly.

10. Third-Party Services

The App does not use Apple's App Tracking Transparency framework or access the device's advertising identifier (IDFA), and it does not include any third-party analytics or advertising software development kits.

The App may contain links to external websites (such as histaminetracker.com and our legal pages); those sites are governed by their own privacy policies.

11. International Users

If you access the App from outside the United States, you understand that your information may be processed and stored in the United States or other jurisdictions.

12. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Material changes will be posted on this page. Continued use of the App after changes constitutes acceptance of the updated Policy.

13. Contact Information

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

Lion, LLC
Email: [email protected]