Privacy Policy

Last Updated: May 19, 2026

Overview

MultiBMS ("the App") is a Bluetooth Low Energy (BLE) battery monitor application. Your privacy is important to us. This policy explains what data the App accesses and how it is handled.

Data Collection

What We Access

• Bluetooth device data: device names, signal strength (RSSI), and battery telemetry (voltage, current, temperature, state of charge) from BMS devices you connect to via Bluetooth.
• App preferences: your settings (polling interval, temperature unit, alert thresholds) are stored locally on your device.

What We Do NOT Collect

• No personal information (name, email, phone number).
• No user accounts or login credentials.
• No location data. (Bluetooth permissions on Android may reference location, but MultiBMS does not use or store your location.)
• No analytics, crash reports, or usage tracking.
• No advertising identifiers.
• No data is transmitted to any server, cloud service, or third party.

Data Storage

All data is stored locally on your device only. Battery telemetry is held in memory during active connections and is not persisted after the app is closed. Your app preferences are stored using the device's local storage.

Data Sharing

MultiBMS does not share any data with third parties. No data ever leaves your device.

Data Deletion

All app data is automatically deleted when you uninstall the App. You can also clear your preferences at any time through your device's app settings.

Children's Privacy

MultiBMS does not collect personal information from anyone, including children under the age of 13.

GDPR Compliance (European Users)

Since MultiBMS does not collect, store, or transmit any personal data, the App is compliant with the General Data Protection Regulation (GDPR). There is no personal data to access, rectify, or delete.

CCPA Compliance (California Users)

MultiBMS does not sell personal information. Since no personal data is collected, there is nothing to disclose, delete, or opt out of under the California Consumer Privacy Act (CCPA).

Bluetooth Permissions

MultiBMS requires Bluetooth permissions solely to scan for and communicate with BMS battery devices. On Android 12+, the App requests BLUETOOTH_SCAN and BLUETOOTH_CONNECT permissions. On iOS, the App requests Bluetooth usage permission. These permissions are used exclusively for BMS device communication.

Changes to This Policy

We may update this privacy policy from time to time. Any changes will be reflected in the "Last Updated" date above.

Contact

If you have questions about this privacy policy, please contact us at [email protected].

MultiBMS is developed and maintained by an independent developer. The App contains no advertising and does not transmit any data off your device.

MultiBMS is an independent application and is not affiliated with, endorsed by, or sponsored by any battery management system manufacturer. JiKong, JBD/Xiaoxiang, Daly, ANT BMS, Seplos, PACE, Victron, SOK, EcoFlow, and Bluetti are trademarks or registered trademarks of their respective owners.