👁 Fovcus

Last updated: April 2026

1. Who we are

Fovcus is a personal vision journal app developed and published by Fovcus (fovcus.com). The app is designed to help people living with macular degeneration and other central vision conditions record and track their visual observations using an Amsler Grid.

2. What data we collect

We collect no personal data.

Fovcus does not require you to create an account. It does not ask for your name, email address, date of birth, or any other personal information.

All data created within the app — including your session recordings, notes, visual acuity entries, and display settings — is stored exclusively on your device using your device's local storage. This data never leaves your device.

3. Data stored on your device

The following information is stored locally on your device only:

• Amsler Grid session recordings (strokes, displacement data)
• Session dates, notes, and visual acuity entries you choose to add
• App display settings (brightness, colour mode, text size, button size)
• Reminder preferences (frequency, time)
• Whether you have completed the onboarding flow
• Your purchase status (stored securely via RevenueCat)

You can delete all of this data at any time by uninstalling the app.

4. In-app purchases

Fovcus offers a one-time in-app purchase to unlock full access. Purchases are processed by Apple (App Store) or Google (Play Store) and are subject to their respective privacy policies. We use RevenueCat to manage purchase verification. RevenueCat may store a non-identifiable app user ID to validate your purchase — no personal information is shared with RevenueCat.

For more information, see: RevenueCat Privacy Policy, Apple Privacy Policy, Google Privacy Policy.

5. Notifications

If you enable reminders, the app will request permission to send you local notifications. These notifications are generated entirely on your device and no data is transmitted externally. You can disable notifications at any time in your device settings.

6. Data export and backup

The app includes an optional backup feature that allows you to export your session data as a file to your device's Files app, cloud storage, or email. This export is performed entirely by you — we do not receive, store, or have access to any exported files.

The app also allows you to generate and share reports (PDF or HTML) with your eye specialist. These reports are created on your device and shared directly by you — we do not receive or store any of this information.

7. Third-party services

Fovcus uses the following third-party services:

• RevenueCat — purchase validation only. No personal data shared.
• Apple App Store / Google Play Store — for app distribution and payment processing.
• Expo — the development framework used to build the app. No data is collected by Expo in the production app.

We do not use any advertising networks, analytics platforms, or tracking tools.

8. Children's privacy

Fovcus is not directed at children under 13. We do not knowingly collect any information from children. As the app collects no personal data from any user, this applies equally to all age groups.

9. Changes to this policy

If we make any changes to this privacy policy, we will update the date at the top of this page. As the app collects no personal data, any changes are unlikely to affect your rights.

10. Contact

If you have any questions about this privacy policy or the Fovcus app, please contact us at:
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