Privacy Policy — Vanza: Invoices & Contracts

App: Vanza: Invoices & Contracts (app.vanza.docs) Developer: Vanza Labs — https://vanzalabs.tech Contact: contact@vanzalabs.tech Effective date: October 15, 2026

This Privacy Policy explains how Vanza: Invoices & Contracts ("Vanza", "the App", "we") handles your information.

1. Summary

  • Vanza is offline-first: your business profile, clients, catalog, documents and signatures are stored only on your device.
  • No registration is required. We have no servers that store your business data.
  • No ads, no third-party analytics or tracking SDKs.
  • Internet is used only for two optional/necessary features: Google Drive backup (if you turn it on) and in-app purchases.

2. Data stored locally on your device

The App stores the following in its private local database (IndexedDB on your device): - your company/business profile (name, address, tax IDs, bank details/IBAN, logo, signature and stamp images); - client directory (names, contacts, addresses you enter); - catalog of goods/services and prices; - documents you create (estimates, contracts, invoices, receipts, delivery notes), including client signatures captured on screen; - app settings (language, currency, PDF theme).

This data is entered by you, stays on your device, and is never sent to Vanza Labs.

3. Optional Google Drive backup

If you choose to connect Google Drive in the App's settings, Vanza uses Google Sign-In and requests these scopes:

Scope Why it is needed
https://www.googleapis.com/auth/drive.file Create, update and read only the backup file created by Vanza (vanza_drive_backup.json) in your own Google Drive. The App cannot see your other Drive files.
userinfo.email, userinfo.profile Show which Google account is connected.

How it works: - The backup (documents, clients, catalog, business settings) is uploaded directly from your device to your own Google Drive over HTTPS. It does not pass through any Vanza server. - Authentication credentials are stripped from backup files. - The OAuth access token and connected email are stored locally on the device only. - You can disconnect Google Drive at any time in the App, delete the backup file from your Drive, and revoke access at https://myaccount.google.com/permissions.

Limited Use disclosure: Vanza's use and transfer to any other app of information received from Google APIs will adhere to the Google API Services User Data Policy, including the Limited Use requirements (https://developers.google.com/terms/api-services-user-data-policy). Google user data is used solely to provide the backup/restore feature; it is not shared with third parties, not used for advertising or AI/ML training, not sold, and not read by humans.

4. Purchases (RevenueCat & Google Play Billing)

Vanza PRO purchases are processed by Google Play Billing; we never receive your payment card details. To validate purchases, manage the trial and restore purchases, the App uses RevenueCat (RevenueCat, Inc.), which receives an anonymous app user ID, the purchased product, transaction/receipt data and basic device/app information (OS version, app version, country/currency). RevenueCat privacy policy: https://www.revenuecat.com/privacy

5. Device permissions

  • Internet — only for Google Drive backup and purchases. All document features work offline.
  • Billing — for in-app purchases via Google Play.
  • Files / Share — to save generated PDFs to your device and send them through the system share sheet (e.g., Telegram, Viber, WhatsApp, email). Sharing happens only when you tap "Share".

6. Data sharing

We do not sell, rent or share your personal or business data. Data leaves your device only: - to your own Google Drive — if you enable backup; - to RevenueCat / Google Play — to process purchases; - to recipients you choose when you share a PDF.

7. Data retention and deletion

  • You can delete individual documents, clients and catalog items at any time.
  • Use Menu → Account → Delete all data (or clear app data / uninstall the App) to permanently erase everything stored locally.
  • Delete the vanza_drive_backup.json file from your Google Drive to remove the cloud backup.
  • To request deletion of purchase records linked to your anonymous RevenueCat ID, email contact@vanzalabs.tech.

8. Security

Local data is kept in the App's private sandbox and protected by your device's security (screen lock, Face ID / fingerprint, OS encryption). Network traffic (backup, purchases) uses HTTPS/TLS. Please keep your device protected, since documents may contain sensitive business information.

9. Children

The App is a business tool and is not directed at children under 13. We do not knowingly collect children's data.

10. Your rights

Depending on your location (GDPR, UK GDPR, CCPA, etc.), you may have rights to access, correct, delete or export your data. Because your data is stored on your device and in your own Google Drive, you can exercise these rights directly in the App. For any question, contact contact@vanzalabs.tech.

11. Changes

We may update this policy; the effective date above shows the current version.

12. Contact

Vanza Labs · contact@vanzalabs.tech · https://vanzalabs.tech