Your battery data stays yours.

Last updated August 5, 2026

MultiBMS does not require an account and does not upload your Bluetooth battery telemetry to a MultiBMS server.

What MultiBMS accesses

• Bluetooth device data: device names, signal strength, and live BMS telemetry such as voltage, current, temperature, state of charge, capacity, cycles, and cell voltages.
• App preferences: locally saved settings such as connected devices, groups, display choices, ride profiles, polling interval, temperature unit, and alert thresholds.
• Optional Watch sensors: if you enable Ride or Race features, Apple Watch can use location and motion sensors for speed, distance, and G-force on your paired devices.
• Purchase status: Apple or Google reports whether an optional cosmetic skin purchase succeeded or was restored so MultiBMS can unlock it locally.

What MultiBMS does not collect

• No MultiBMS user account, name, email address, or phone number.
• No advertising identifier, analytics, behavioral tracking, or advertising.
• No battery telemetry, Bluetooth device data, ride data, location history, or app preferences sent to a MultiBMS server.
• No sale of personal information.

Storage and deletion

Battery monitoring works locally on your phone and paired Apple Watch. Live telemetry and short history are held on-device. Preferences, saved devices, groups, profiles, and unlocked-skin status are stored locally. BMS credentials are kept in the operating system's secure storage. Uninstalling MultiBMS removes its locally stored app data; operating-system backups and store purchase history remain subject to Apple or Google policies.

Purchases and third parties

Optional one-time purchases unlock cosmetic visual skins. Apple App Store or Google Play processes the transaction and may process account, payment, and transaction information under its own privacy policy. MultiBMS receives purchase status, not your payment-card details. Core battery monitoring does not depend on a skin purchase.

Bluetooth and location permissions

Bluetooth permission is used to scan for and communicate with compatible BMS hardware. Some Android versions label Bluetooth scanning as a location-related permission; MultiBMS does not use that permission to build or upload a location history. Apple Watch location and motion permissions are used only for Ride and Race features you choose to run.

Children

MultiBMS does not knowingly collect personal information from children. The app has no accounts, advertising, or analytics.

Changes and contact

This policy may be updated as MultiBMS changes. The date above identifies the latest version. Questions can be sent to [email protected].