GPS boat speedometer for Android (Kotlin/Compose) with Bluetooth battery analytics & range estimation — for electric & trolling motors with a BLE BMS (JBD/Daly/JK). Multi-battery, trip tracking, km/h↔knots, EN/DE.
android kotlin battery gps knots bluetooth ble android-app boat speedometer bms gps-tracking marine jetpack-compose lifepo4 gps-speedometer material3 range-estimation electric-boat trolling-motor
-
Updated
Jul 25, 2026 - Kotlin