Privacy policy: Battery Alarm

Last updated 29 September 2026

Battery Alarm is an Android app published by Nessaid Android Studio. It watches the battery level and sounds an alarm at levels you choose. This policy explains what it does and does not collect.

What the app collects: nothing

There is no account and no sign-in. The app does not collect, transmit or store any personal information on our side, because there is no server on our side. We cannot see your alarms, your settings or your battery.

What stays on your device

• Your alarms: the levels, notes and on/off state, kept in a database on the device.
• Your preferences: alert sounds, durations, language, colour and so on.
• Battery history: level, temperature, voltage and charging state, recorded on the device so the app can draw its history chart. Readings older than about a week are removed.

None of it is sent anywhere. All of it is deleted when you uninstall the app.

Advertising

The app shows banner ads, and occasionally a full-screen ad when you leave a settings or detail screen, through Google AdMob.

Google's ad SDK sends four kinds of information to Google in order to select and measure ads: your device's advertising ID, your interactions with the ads themselves, diagnostic information about how the SDK performed, and your IP address, from which an approximate location can be estimated. The app requests no location permission and cannot see where you are; the estimate comes from the IP address every internet connection carries.

That is Google's processing, not ours. We receive no personal data from it and see only aggregate performance figures. This is also what the app declares on its Google Play data safety page, and the two are meant to say the same thing.

Google Privacy Policy · How Google uses information from sites or apps that use its services

You can reset or delete your advertising ID, and opt out of ad personalisation, in your phone's settings under Google, then Ads. The alarms work the same either way; the ads simply become less relevant.

Consent, for users in the EEA, the UK and Switzerland

If you are in one of those regions, the app asks for your consent before any ad is requested, using Google's certified consent platform. If you decline, you will see non-personalised ads or none at all; the alarms work exactly the same either way. Your choice is stored on the device. To be asked again, clear the app's data in Android's app settings.

Permissions, and why

• Notifications: to show the ongoing battery notification and the alarm itself.
• Run a foreground service: to keep watching the battery while the app is not open. This is the only way to catch a level you have set.
• Start at boot: so watching resumes after a restart.
• Full-screen notification: so a sounding alarm can show its own screen, as an alarm clock does.
• Exact alarms: so a snooze ends at the time you chose.
• Wake lock: to turn the screen on briefly when an alarm sounds.
• Vibrate: for the vibration alert.
• Internet and network state: used only to load ads. No other part of the app uses the network.
• Advertising ID: used only by Google AdMob, as described above.

Children

The app is not directed to children under 13, and we do not knowingly collect information from them.

Selling data

We do not sell your data. We have none to sell.

Changes

If this policy changes, the date at the top changes with it, and the current version is always at this address.

Contact

Questions about this policy: nessaid.android@gmail.com.