DiagNova
Privacy Policy
DiagNova is a vehicle diagnostics app for ELM327-compatible OBD2 adapters. We designed it as a local-first, offline-capable tool — your vehicle data stays on your device. This document explains what data the app accesses, how it is used, and the choices you have.
Summary
- No accounts. DiagNova does not require a sign-up or login.
- No tracking, no analytics, no advertising. We do not collect usage data, device identifiers, IP addresses, or behavioural information for marketing purposes.
- No third-party data sharing. We do not sell, rent, or share your data with brokers or advertisers.
- Local storage only. Diagnostic sessions, DTC events, PID readings and optional crash logs are stored in a local SQLite database on your device and never leave it unless you explicitly export or share them.
What the app accesses
| Data / permission | Why | Leaves your device? |
|---|---|---|
| Bluetooth (BLE / Classic, Android & iOS) | Connect to your ELM327 OBD2 adapter to read engine data and DTC codes. | No. |
| Coarse/Fine location (Android < 12 only) | Required by the Android OS as a precondition for Bluetooth scanning. Not used for navigation, geofencing, or location reporting. | No. |
| Camera | VIN scanning and the AR-guided repair overlay (when you open those screens). | No. Frames are processed locally and discarded. |
| Notifications | Local alerts when a measured value crosses a configured threshold (e.g. coolant > 105 °C, battery < 11.5 V) or when readiness monitors complete. | No. |
| Local storage (SQLite via Drift) | Vehicle profile, sessions, DTC history, PID samples, repair playbook progress. | No, unless you tap "Share" / "Export". |
| Crash log file | Optional. Lets you share the recent crash trace via your OS share sheet to help us debug. Stored locally; never auto-uploaded. | Only if you manually share it. |
DiagNova does not request access to: contacts, calendar, photos, files outside its own sandbox, microphone, or precise background location.
What we do NOT collect
- We do not collect your name, email address, phone number, billing details, or any personally identifiable information.
- We do not collect your VIN, license plate, registration, or insurance data on any server. VIN may be read from your vehicle by the app and stored locally to identify your vehicle profile — it never leaves your device.
- We do not collect GPS traces, trip history, driving behaviour or routes.
- We do not use third-party SDKs for analytics, advertising, or A/B testing.
How your data is used
Your diagnostic data (vehicle profile, sessions, DTC events, PID samples) is used only on your device to:
- Show live engine values and freeze-frame data.
- Run the playbook engine that ranks likely root causes.
- Build session history and trend charts.
- Compare two sessions side by side.
We do not transmit this data anywhere. The app does not require an internet connection to function.
Sharing & export (you control it)
You can manually export or share data using your operating system's share sheet:
- DTC scan results (PDF).
- Trip / session reports.
- Crash log.
What happens after you share it (e.g., emailing a PDF to a mechanic) is governed by the recipient app and is outside DiagNova's control.
Children's privacy
DiagNova is not directed at children under 13. We do not knowingly collect personal information from children.
Data retention & deletion
Because all data is stored locally:
- Uninstalling DiagNova removes the database and all diagnostic history.
- You can clear the crash log from Settings → About → Clear crash log.
- You can delete individual sessions or vehicles from the History screen.
Security
Data lives in the app's private storage area provided by the operating system. Bluetooth communication with the ELM327 adapter happens over a direct local link — no cloud relay.
Changes to this policy
If material changes are made (for example, if a future version adds an optional cloud sync feature), the effective date above will be updated and a notice will be shown in-app on first launch of the new version.
Contact
Questions or requests: info@kingdroid.eu
For users in the EU/UK: under the GDPR / UK GDPR, DiagNova does not act as a controller of personal data because it does not collect any to begin with. The app's local-only data lives entirely under your control on your device.