Privacy Policy — PhoneCheck Pro

Last updated: 20 April 2026

This privacy policy explains how PhoneCheck Pro ("the app", "we", "our") handles information when you use the Android application distributed on Google Play. The app is developed and maintained by Nordic Node (the "developer").

1. Summary

• The app runs device diagnostics entirely on your phone.
• Test results, device identifiers, and shop details are stored locally on your device. They are not uploaded to a server operated by the developer.
• The free tier shows advertisements served by Google AdMob. AdMob may collect data as described in Google's own privacy policy.
• Purchases and subscriptions are processed by Google Play Billing. The developer does not receive your payment details.
• You can request deletion of any information held locally by uninstalling the app or clearing its storage.

2. Information the app accesses

2.1 Device information

To generate a diagnostic report the app reads technical information available from the Android operating system, such as:

• Brand, model, manufacturer, and hardware identifiers (serial number, build fingerprint).
• IMEI (when available — on Android 10 and later this is restricted by the operating system and typically not accessible).
• Android version, SDK level, baseband, and kernel information.
• Battery level, temperature, voltage, and charging state.
• Screen resolution, refresh rate, and density.
• Network state (Wi-Fi SSID, signal strength, IP address, carrier name).
• Live readings from the device's sensors (accelerometer, gyroscope, magnetometer, proximity, ambient light, step counter).

This information is used only to perform and display the requested tests and is saved locally as part of the test-session history on your device.

2.2 Permissions requested

• Camera — to run the rear- and front-camera tests, the flashlight test, and to scan shop QR codes in "Counter-mode".
• Microphone — to record and play back audio during the microphone test.
• Location (coarse and fine) — to verify that the GPS sensor returns a fix. No location data is transmitted.
• Bluetooth — to scan for nearby devices during the Bluetooth test. No pairing is performed.
• Storage / photos — to let you pick a shop logo and to save exported PDF or CSV reports.
• Biometrics — to verify that the fingerprint/face sensor responds correctly.
• Vibration, flashlight, network state — to exercise the corresponding hardware.

Permissions are only requested when you start the specific test that requires them. You can deny or revoke any permission at any time from Android's system settings; the rest of the app will continue to work.

2.3 Shop details (Pro tier)

Pro subscribers can optionally enter a shop name, address, telephone number, technician name, and a shop logo so that these details appear on exported PDF reports. This information is stored locally on your device and is only included in reports you export yourself.

2.4 Counter-mode voucher (Pro tier)

When a Pro-subscribing repair shop generates a Counter-mode QR code, the QR payload contains the shop name, optional address and phone number, technician name, and an expiry timestamp, signed with an offline signature. When a customer's device scans this QR, the shop details are stored locally for the duration of the session only and removed automatically when the session expires.

3. Data storage and retention

All test results, device snapshots, shop details, and counter-mode sessions are stored in an on-device SQLite database and in the app's private preferences. They never leave your phone unless you explicitly share an exported PDF or CSV file through Android's share sheet.

You can delete this information by:

• removing individual sessions from the in-app history screen,
• clearing the app's storage via Android Settings → Apps → PhoneCheck Pro → Storage → Clear data, or
• uninstalling the app.

4. Advertising (free tier)

The free version of the app displays advertisements through Google AdMob. AdMob is provided by Google Ireland Ltd. Depending on your consent and region it may collect data such as your advertising identifier, approximate IP-based location, device type, and interaction with ads.

Before any personalised ads are shown, the app presents a Google User Messaging Platform (UMP) consent form in line with GDPR and the EU Digital Markets Act. You can change or withdraw your consent at any time from the in-app setting Settings → Privacy → Ad privacy options.

Google's privacy policy is available at policies.google.com/privacy and its advertising practices are described at policies.google.com/technologies/ads.

Users who purchase the "Remove Ads" one-time product or an active Pro subscription never see advertisements. For Pro users the ad SDK is not initialised on cold start.

5. Purchases and subscriptions

In-app purchases (Remove Ads, PhoneCheck Pro Monthly, PhoneCheck Pro Yearly) are processed by Google Play Billing. The developer receives only the purchase token and product identifier needed to validate your entitlement on-device. Payment methods, names, and billing addresses are handled by Google and are governed by its own policies.

6. Third-party libraries

The app is built with the Expo and React Native frameworks and includes open-source libraries. The libraries that can interact with data or servers are limited to:

• react-native-google-mobile-ads and the Google UMP SDK (advertising, consent).
• react-native-iap (Google Play Billing).
• @react-native-community/netinfo (reads local network state; no data transmitted).
• expo-file-system, expo-sharing, expo-print (local file handling and sharing through the system share sheet).
• The network-benchmark test fetches a public file from speed.cloudflare.com to measure throughput. No personally identifying information is included in that request.

7. Children

PhoneCheck Pro is a professional diagnostic tool and is not directed at children under 13. The app does not knowingly collect personal information from children.

8. Your rights (GDPR / UK GDPR)

Because the developer does not store personal data on a server, there is no personal data held by the developer that could be exported or erased on request. For data held locally by the app you are in direct control: uninstalling the app or clearing its storage removes everything. For data processed by Google (ads, billing, consent) please use the rights and controls offered by Google, including the in-app "Ad privacy options" and your Google account privacy settings.

9. Security

Data at rest is stored in the app's private storage, which Android sandboxes from other applications. Counter-mode QR vouchers are signed with an HMAC so that an altered voucher is rejected by scanning devices. No encryption at rest is applied to locally stored reports; you should treat an unlocked device as you would any other.

10. Changes to this policy

If this policy changes, the updated version will be published at the same URL and the "Last updated" date above will be revised. Material changes will also be announced in the app's release notes.

11. Contact

Questions about this policy or about how the app handles information can be sent to:

Nordic Node
E-mail: nordicnode26@gmail.com