Wireless Charging Check — Privacy Policy

Effective date: 14 July 2026

This privacy policy explains exactly what data Wireless Charging Check (“the app”, “we”, “our”) reads, stores, and shares. Wireless Charging Check is published by Nordic Node, based in the Netherlands.

Summary

The app’s core function — reading your battery to verify wireless charging — runs entirely on your device and transmits nothing.
The app stores a small set of local preferences (charging-observation timestamps, an optional-notification setting, and an ad-free purchase flag). These never leave your device.
The app shows Google AdMob ads (banner, native, and an occasional full-screen interstitial) and uses Firebase Analytics and Crashlytics. These run only after you consent through the Google consent form, and you can withdraw consent at any time.
The app offers an optional one-time “Remove ads” purchase handled by Google Play Billing.

What the app reads from your device

When the app is open, it reads from the Android BatteryManager surface:

Whether a wireless charger is connected (BATTERY_PLUGGED_WIRELESS)
Whether a dock charger is connected (BATTERY_PLUGGED_DOCK, Android 13+)
Battery voltage, current, temperature, level, status, scale, and energy/charge counters

These readings are displayed live on the screen. They are never stored on the device beyond the current session, and they are never transmitted off the device.

What the app stores locally

A handful of small values in Android DataStore preference files. None of them identify you, and none are ever transmitted:

Two timestamps recording when wireless and dock charging were first observed.
Your most recent charging session, and a rolling 7-day counter (number of sessions and peak wattage) — used only for the optional weekly recap notification.
Whether you opted in to notifications, plus simple frequency-cap timestamps.
Whether you purchased the ad-free upgrade — a single true/false flag that caches your Google Play purchase.

All of these are excluded from Android Auto Backup and Device Transfer (see data_extraction_rules.xml and backup_rules.xml in the app’s source code).

Permissions

com.google.android.gms.permission.AD_ID — used by the AdMob SDK to read the device Advertising ID for personalised or non-personalised advertising, depending on your consent choice.
android.permission.POST_NOTIFICATIONS (Android 13+) — an optional runtime permission, requested only if you choose to enable the weekly charging recap. It is off by default and is never requested on first launch.
com.android.vending.BILLING — added by the Google Play Billing library so you can make the optional in-app purchase. It shows no prompt and grants no access to your data.

Advertising

The app displays Google AdMob ads: a banner, inline native ads styled as cards, and an occasional full-screen interstitial. Through AdMob, Google may collect:

Advertising ID (if you consent)
IP-derived approximate location
App interactions (ad taps, viewability metrics)

Google’s privacy policy for advertising: https://policies.google.com/technologies/ads

To withdraw or change your consent at any time, open the app, tap the overflow menu (︙ top-right), then Privacy options.

In jurisdictions where consent is required (EU/EEA, UK, Switzerland), the Google UMP SDK presents a consent form on first launch. Your choice is persisted locally by the UMP SDK, and no ads are requested before you have answered it.

Analytics and crash reporting

The app uses Firebase Analytics (basic usage events, such as when an optional notification is sent) and Firebase Crashlytics (crash reports and diagnostics) to understand stability and improve the app. Both are disabled until you consent through the same Google consent form used for advertising. If you withdraw consent (overflow menu → Privacy options), collection stops and any unsent crash reports are deleted.

Firebase / Google privacy information: https://firebase.google.com/support/privacy

In-app purchases

The app offers a single optional one-time purchase, “Remove ads”, processed by Google Play Billing. Google handles the payment; we never see or store your payment details. The app only keeps a local true/false flag caching whether you own the upgrade — Google Play remains the source of truth, so reinstalling and choosing “Restore” recovers your purchase.

Notifications

If you opt in, the app can send at most one notification per week, recapping your wireless-charging week and sharing a tip. It is entirely optional, off by default, and stops on its own if you stop using the app for a while. You can turn it off in your device settings at any time.

What we do NOT do

We do not transmit your battery readings off the device.
We do not build or upload a long-term charging history — only your most recent session and a rolling 7-day counter stay on the device.
We do not access your precise location, contacts, files, microphone, camera, or any other sensors.
We do not maintain a “supported devices” list and we do not transmit your phone’s model or hardware identifiers anywhere.
We do not sell your data.

Data retention and deletion

All app data lives on your device. Clearing the app’s data (Android Settings → Apps → Wireless Charging Check → Storage), or uninstalling the app, removes the local preferences described above. Data collected by AdMob, Firebase Analytics, and Crashlytics is handled by Google under its own policies; withdrawing consent in the app stops any further collection.

Children’s privacy

The app is intended for a general audience and is not directed at children. Advertising is handled per the AdMob policy linked above; we have set setTagForUnderAgeOfConsent(false) in line with AdMob’s documentation.

Changes to this policy

If we change this policy, we will update the effective date at the top of this page. Material changes will be highlighted in the app’s About dialog.

Contact

Privacy questions: nordicnode26@gmail.com
Publisher: Nordic Node, the Netherlands.