Privacy Policy - Nachmessen

Effective date: 2026-10-30

1) Who we are

Nachmessen is provided by Saifullah Ahad ("we", "us", "our"). Our website/portfolio is: https://saifullah.ai.

Email: [email protected]

Phone: +8801711134346

Location: Dhaka, Bangladesh

2) What this policy covers

Nachmessen is an offline surface-drip irrigation measurement and retesting tool designed to record catch-can volumes, calculate emission uniformity, and evaluate flow consistency. This policy explains how information is handled on your device.

3) Information we collect

Nachmessen does not collect, store, transmit, sell, or share personal data. The application operates 100% locally on your device with no backend server, no account creation, no analytics tracking, no advertising networks, and no third-party telemetry SDKs.

The app requests strictly zero network permissions (android.permission.INTERNET and android.permission.ACCESS_NETWORK_STATE are completely absent from the application manifest). Consequently, the app is physically incapable of transmitting any data over the internet.

4) On-device data storage

All entered blocks, point configurations, catch-can measurements, pressure readings, and run histories are stored strictly within the app's private, encrypted local SQLite database on your device.

Nachmessen requests the android.permission.USE_BIOMETRIC permission exclusively to enable an optional local biometric lock to protect on-device access. Android handles all biometric verification hardware-side; the application never accesses, reads, or stores biometric identifiers.

5) File exports and external sharing

The application operates strictly locally on your device. The current release does not export, import, transmit, or share your saved measurements across any network or external service.

6) Data retention and deletion

All data remains on your device until you choose to delete individual blocks, clear the app data via Android Settings, or uninstall the application. Uninstalling Nachmessen immediately and permanently deletes all locally stored data.

7) Children's privacy

Nachmessen is a technical agricultural and irrigation utility tool. It does not knowingly collect, request, or handle personal information from anyone, including children.

8) Contact

If you have any questions about this privacy policy, please contact us at: [email protected].