Retro 3D Calculator — Privacy Policy

Retro 3D Calculator (“we”, “our”, or “the App”) is a 3D retro-styled calculator designed to recreate the tactile and visual experience of vintage desktop calculators. We respect your privacy and are committed to collecting as little data as possible.

1. Summary — the quick version

• No ads. Retro 3D Calculator does not show third-party advertising.
• No tracking. We do not track users across apps or websites.
• Offline-first. Calculator usage, history, and settings are stored locally on your device.
• Optional network access. Used only to fetch calculator skins or show “Discover More” content.
• Purchases. We use RevenueCat to manage one-time, non-consumable purchases. We never see your payment details.

2. Information we collect

2.1 Data stored locally on your device

The following information is stored only on your device and is not transmitted to us:

• Calculation history, replay data, and CHECK mode data.
• Calculator state (memory, constants, GT values).
• Selected calculator skin and calibration data.
• Downloaded skin assets and locally cached images.
• App preferences (sound, orientation behavior, UI settings).

2.2 Network-fetched content

Retro 3D Calculator may access the network in limited cases:

• Calculator skins: To download or refresh optional skin assets.
• Discover More: To fetch and display information about other Simplivio apps.

These requests do not include personal information and are not used for tracking.

2.3 Purchase information

If you purchase premium calculator skins, purchase validation is handled by Apple and RevenueCat. We do not collect or store payment card details.

2.4 Diagnostic information

• Basic device and OS version information.
• Crash logs, if enabled at the operating system level.

3. How we use your data

• To perform calculations: All calculator logic runs locally on your device.
• To manage skins: Downloaded skins and calibration data are stored and applied locally.
• To restore purchases: RevenueCat determines entitlement status for premium skins.
• To improve stability: Crash logs help identify and fix issues.

4. Third-party services we use

4.1 RevenueCat

Purpose: manage and restore in-app purchases.
Data shared: purchase receipts and entitlement status.
Privacy Policy: revenuecat.com/privacy

4.2 Platform services (Apple)

Apple handles payment processing and may provide aggregated crash diagnostics depending on your device settings.

5. Where your data is stored

• On your device: Calculator data, history, skins, and preferences.
• Third-party services: Purchase validation via Apple and RevenueCat.

6. Data retention

All local data remains on your device until you delete it or uninstall the app. Purchase records are retained by Apple and RevenueCat according to their policies.

7. Your choices

• Local data: Uninstalling the app removes all local data.
• Purchases: Restore purchases using the in-app “Restore Purchases” option.
• Network access: You may use the app fully offline, except for optional content.

8. Children

Retro 3D Calculator is suitable for all ages. We do not knowingly collect personal information from children under 13.

9. Security

We rely on platform-level security and reasonable safeguards to protect your data. No system is completely secure, so we encourage keeping your device up to date.

10. Policy updates

We may update this Privacy Policy from time to time. Changes will be reflected by updating the “Last updated” date above.

11. Contact us