Last revised: 2026-11-11
Maqbis – Battery Monitor is a free service offered under the Maqbis – Battery Monitor brand. This policy explains how the service processes information on your device and on servers. See also the Terms and Conditions.
Website visit analytics
The website uses Google Analytics linked to the app's Firebase project to understand visits and improve pages. We request permission before enabling analytics for visitors in Europe and the United States, and when the country cannot be determined. Outside these configured regions, analytics may start without a prior prompt unless you have declined it. Data may include pages visited and their titles, referral sources, browser and device information, and engagement. We send page URLs without query parameters or fragments, and do not send your account data or battery readings from the website to Analytics. Advertising signals and ad personalization are disabled.
You can decline or change your choice using “Analytics settings” at the bottom of the page. In regions where we show the prompt, we do not load the analytics tag before acceptance. Declining or withdrawing permission stops future collection and clears this site's analytics cookies; it does not automatically delete data already sent. Your choice is stored locally. If your browser blocks storage, it lasts only for the current page session. See Google's Privacy Policy for information about data processing.
We estimate the country from the connection IP address using our existing app API, without requesting precise device location. The IP returned by this lookup is not stored in the browser. VPNs and unresolved addresses can affect the result; when no valid country is available, we show the consent prompt.
App usage analytics
The app uses Google Analytics for Firebase to understand how the app is used and to find errors. Automatic events are collected, such as first open, session start, app and operating system updates and app removal, with the app version and the screen in use. The app also sends its own events about sign-in, registration, profile editing, account deletion errors, install invitations and the support offer. These events can include your account ID, the device identifier used by the service, error messages, country, language and the price shown. They do not include battery readings or location coordinates. Google Analytics for Firebase does not collect the advertising ID in the app, and ad storage and ad personalization are disabled for it. Deleting your account does not automatically delete data already sent to Analytics.
Meta app events
To measure our app install ads on Facebook and Instagram, the Android app includes the Meta SDK (Facebook SDK for Android). When the app is installed and opened, the SDK sends events such as the app install and app launches to Meta, together with your device's advertising ID, an identifier the SDK generates for the app installation, device and app information such as model, operating system and app versions, language and time zone, and the IP address. Meta may use this information to attribute installs to ads and to measure and improve ad delivery. We do not add account data, battery readings or location coordinates to these events. You can reset or delete the advertising ID in your device settings. Deleting your account does not delete data already sent to Meta. See Meta's Privacy Policy.
Information and purposes
We process account identifiers, email, sign-in/session information and the profile information you provide, including your name, photo and additional fields you choose to provide, such as phone number, birth date, gender, address, country and time zone. We use these profile fields to maintain the account profile you provide. We also process support messages and attachments you send, to respond to your requests.
To register devices, display their status, synchronize readings and deliver notifications, the service processes device identifiers, name, model, manufacturer, operating system and app versions, push notification tokens and permission status. Battery readings include timestamps, charge level, charging status and source, temperature, voltage, current, health and capacity information where the device supplies them. These readings support history, estimates and alerts. Requests and technical records may include IP addresses, request times and error information needed to operate and troubleshoot the service.
Location
The current Android app does not request location permission and does not collect your device's location. Earlier versions could send coordinates with battery readings when location permission was granted, including in the background. Coordinates already stored that way stay in the device's reading history until they are deleted as described below.
Device settings control notifications and other permissions.
Sharing and visibility
People you authorize through device sharing can see shared device information, battery status/history and available location information, and use the monitoring features available to them. Review recipients carefully and revoke sharing in the app when access is no longer appropriate. Revocation does not recall information already viewed, copied or saved. Opening a location in a map app sends coordinates to the selected app, under that provider's terms and privacy policy.
Profile photos are stored at public URLs: anyone with the URL may access the image, separately from battery-sharing permissions. Copies can remain cached after replacement or removal. Support attachments are stored privately for support handling, rather than published as profile photos.
Local storage and service providers
The app stores cached readings, session information, preferences and invitation state locally. Server processing is required for accounts, synchronization, sharing and support; information does not remain exclusively on your device.
The service uses Firebase Authentication for identity/sign-in, Firebase Cloud Messaging for push notifications, Google Analytics for Firebase for app usage analytics, Google Cloud Storage for photos and support attachments, and hosting/database services for account and device records and reading history. Providers process information needed for these functions; the operator handles information needed to run the service and respond to support requests. See Firebase privacy information and Google's Privacy Policy. External websites and map apps apply their own policies.
Retention, deletion and your controls
Account and device information and reading history are retained to provide the service while associated with your account/devices. Coordinates included in saved readings are retained as part of that history under the same account/device retention criteria. Reading history is not automatically removed simply because it reaches a particular age. Support records are retained for handling requests and account administration. Technical and request records may remain after account deletion.
Requesting account or data deletion
In the app, open My account, then Account > Edit profile, and select Delete my account in the Danger zone at the bottom; confirm the deletion when asked. The deletion process removes your account/profile, account-owned devices and their saved readings (including coordinates), shares to or from your account, outgoing invitations, settings, notifications and support messages. It also attempts to remove the related photo, support attachments and authentication account.
For a deletion request outside the app, email [email protected] from your account email address and identify the account or data you want deleted. Do not send your password. You can also contact us for access, correction or deletion help.
Removal from external services can fail or require follow-up. Remaining technical records, cached images or other copies may require additional handling; deletion of the account does not ensure that every copy is erased immediately. Contact us if data appears to remain or you cannot use the deletion control. Signing out or uninstalling the app is not account deletion.
Security and children
We use measures intended to protect information, but no transmission or storage system is completely secure. Protect your account and device and avoid sending unnecessary sensitive information in support messages or photos.
The service is not intended for children under 13. We do not knowingly collect their personal information. If you believe a child under 13 has provided information, contact us so we can investigate and take appropriate deletion action.
Changes and contact
Updates will appear on this page with a revised date. For privacy questions or requests, contact the Maqbis – Battery Monitor team at [email protected].