Welcome to WALLTIK (Smart Expense Tracker), an offline-first personal finance application developed by Ovixtik. This Privacy Policy explains how WALLTIK handles information when you use the application.

1. Information We Collect

1.1 What WALLTIK Stores on Your Device

All data is stored locally in the app's private storage and is never transmitted to any server. The data includes:

• Financial Records: Expenses, income, debts, savings, and category information you manually enter.
• App Preferences: Language, currency, theme mode, primary color, and notification settings.
• Security Settings: Your 4-digit PIN code and biometric unlock preferences.
• Optional Receipt Photos: Images you choose to attach to expense records (Premium feature).
• Setup Flags: First-run status, onboarding completion, and migration markers.

1.2 What WALLTIK Does NOT Collect

• No personal identifiers (name, email, phone number, address).
• No device identifiers (IMEI, advertising ID, installation ID).
• No location data of any kind.
• No contacts, calendar entries, SMS, or call logs.
• No usage analytics or behavioral metrics.
• No crash reports or error telemetry.
• No account credentials — the app has no login or sign-up screen.

2. Data Storage Locations

2.1 Local SQLite Database

Stored in the app's private directory and inaccessible to other apps. Contains tables for expenses, income, income history, custom categories, debts, and deleted debts (trash bin).

2.2 Local Key-Value Storage

Used for preferences and settings such as language code, theme mode, PIN, biometric toggle, and Premium status flag.

2.3 Private File Storage

Receipt photos attached to expenses are stored in the app's private documents directory and are not visible to other applications.

3. Permissions Requested

WALLTIK requests the following Android permissions only when needed for specific features:

WALLTIK does not request background service, boot completion, wake lock, SMS, or phone permissions.

4. Backup and Restore (User-Initiated Only)

4.1 Creating a Backup

When you tap "Backup" in Settings, WALLTIK creates a ZIP file containing your database and receipt photos. This file is passed to your device's system share sheet — you choose where to send it (Gmail, Drive, USB, etc.). The app itself never uploads this file anywhere.

4.2 Restoring a Backup

You can select a ZIP file from your device through the system file picker. WALLTIK replaces the local database and receipt files with the backup contents. No data leaves your device during this process.

5. Third-Party Services

WALLTIK does not integrate with any of the following:

• No Firebase, Google Analytics, or Crashlytics
• No AdMob or any advertising networks
• No Mixpanel, Sentry, or other tracking SDKs
• No social media login or sharing SDKs
• No cloud sync or backup services

The app uses only open-source Flutter packages for local functionality. None of these packages communicate over the network on behalf of WALLTIK.

6. External Links

WALLTIK contains links in the Settings screen that open your system browser. The app itself does not send any data to these URLs — your browser handles them independently:

• Link to the developer's other apps on Google Play
• Link to rate WALLTIK on Google Play
• Link to this Privacy Policy
• Email link to contact support

7. Premium Subscription Notice

8. Security

• PIN Lock: Optional 4-digit PIN to access the app.
• Biometric Authentication: Optional fingerprint or face unlock using your device's built-in security.
• App-Private Storage: All data is isolated and protected by the Android operating system.

9. Data Retention and Deletion

Your data remains on your device for as long as WALLTIK is installed. To delete all your data:

• Uninstall the app, OR
• Clear app data through your device's Settings → Apps → WALLTIK → Storage → Clear Data

Both actions permanently remove all financial records, settings, and receipt photos. Backup files you saved externally are not affected and remain under your control.

10. Children's Privacy

WALLTIK does not target children under the age of 13 and contains no third-party content directed at children. Since the app does not collect any personal information from any user, it does not knowingly collect any data from children. The minimum supported Android version is 5.0 (Lollipop).

11. International Users and Compliance

WALLTIK supports 11 languages (Arabic, English, Spanish, Italian, German, French, Portuguese, Turkish, Chinese, Hindi, Persian) and is available worldwide. Because no data is transmitted or stored on external servers, there are no international data transfers.

WALLTIK is designed to comply with major privacy regulations including:

• General Data Protection Regulation (GDPR)
• California Consumer Privacy Act (CCPA)
• Google Play Data Safety requirements
• Children's Online Privacy Protection Act (COPPA)

12. Your Rights

You have complete control over your data at all times:

• Access: All your data is visible inside the app.
• Modification: Edit or delete any record at any time.
• Export: Create backup files whenever you wish.
• Deletion: Uninstall the app to remove all data permanently.
• Portability: Backup files can be saved or transferred freely.

13. Changes to This Privacy Policy

We may update this Privacy Policy occasionally to reflect changes in the app or applicable laws. The "Last Updated" date at the top of this page indicates when the policy was last revised. Significant changes will be communicated through the app's Settings screen and the Google Play listing. Continued use of WALLTIK after such updates constitutes acceptance of the revised policy.

14. Contact Information