Privacy Policy for Unitix

1. Information We Do Not Collect

Unitix does not collect, record, or transmit any Personally Identifiable Information (PII). Specifically:

• No names, email addresses, phone numbers, or account credentials.
• No location data (neither precise GPS nor coarse network location).
• No device identifiers, advertising IDs, Android IDs, or IMEI numbers.
• No contacts, photos, camera access, microphone, or external files.
• No payment credentials or banking information (Unitix is free of charge).

2. Local On-Device Storage (AsyncStorage)

Unitix stores operational preferences and calculation data strictly within the sandboxed local storage on your physical device:

• Conversion History: Your recent conversions (automatically capped at 100 entries for optimal storage efficiency).
• Starred Favorites: Quick-access unit pairs you choose to favorite.
• User Preferences: Visual theme preference (Light, Dark, or System) and language setting.
• Cached Currency Rates: Bundled and updated currency exchange tables stored locally so you can convert 40+ currencies completely offline.

This data never leaves your device and is never uploaded to any remote server or cloud database.

3. Network Requests & Currency Rates

Unitix requests two standard network permissions: android.permission.INTERNET and android.permission.ACCESS_NETWORK_STATE.

• These permissions are used solely to fetch public foreign exchange rate tables when you are connected to the internet and trigger a rate refresh (or enable daily auto-refresh).
• Rate requests are made over encrypted HTTPS to public currency data providers (open.er-api.com / exchangerate-api.com).
• These queries are anonymous and contain zero user identifiers, personal data, or device fingerprints.
• When offline, Unitix works entirely without network requests using your locally cached rates.

4. Third-Party Trackers, Analytics & Advertising

Unitix contains no third-party analytics SDKs (such as Firebase Analytics, Google Analytics, or Mixpanel) and no advertising platforms (such as Google AdMob or Unity Ads). We do not perform user profiling, behavioral analysis, or ad targeting.

6. Children's Privacy (COPPA & Families Policy)

Unitix is a general-utility calculation tool suitable for all audiences, including families and children under the age of 13. Unitix complies with the Children's Online Privacy Protection Act (COPPA), the General Data Protection Regulation (GDPR), and Google Play's Families Policy. We do not knowingly collect personal information from children.

7. Security & Android Backup Policy

Unitix operates with android:allowBackup="false" to ensure that local calculation history and cached rates are not extracted into unencrypted cloud backups. All network transmissions for currency updates are performed strictly over TLS 1.3 / HTTPS.

8. Changes to This Privacy Policy

We may update this Privacy Policy from time to time. Any revisions will be published on this page with a revised effective date. We encourage users to review this page periodically.