Skip to content
BGeo SDK

BGeo SDK

BGeo is a background-geolocation SDK for native Android. It keeps tracking across app backgrounding, process death, and reboot, uploads locations from native code (no Kotlin of yours in the hot path), and adapts GPS use to motion to save battery.

  • Kotlin-first — suspend functions and Flows, not callbacks. Every method mirrors the name it has in BGeo’s React Native and Flutter SDKs, so moving between them is a matter of syntax rather than concepts.
  • Native offline upload — a durable SQLite queue drains to your server with batching, backoff, and optional JWT refresh; it survives process death.
  • Motion-based tracking — Kalman smoothing, activity recognition, a stationary geofence wake, and an elastic distance filter.
  • No headless layer to write. React Native and Flutter both need one, because the JS context and the Dart isolate die while the service keeps running. A native app does not: Android restarts your process and calls Application.onCreate for every boot, geofence and service event, which is where attach() goes.
  • Closed engine, open facade — the engine ships as a prebuilt dev.bgeo:bgeo-android AAR behind a Kotlin facade you can read end to end on GitHub.
  • Free — including for commercial apps. No license key, no registration, no payment.

Install

build.gradle.kts
dependencies {
    implementation("dev.bgeo:background-geolocation:0.3.0")
}

Both artifacts are on Maven Central; the engine comes in transitively. See Installation for the two things Gradle cannot do for you — attach() and the background-location permission.

Track in ten lines

BackgroundGeolocation.attach(this) // Application.onCreate, once per process


lifecycleScope.launch {
    BackgroundGeolocation.ready(Config(distanceFilter = 10.0, stopTimeout = 5))
    BackgroundGeolocation.requestPermission(permissionRequester)
    BackgroundGeolocation.start()
}


lifecycleScope.launch {
    BackgroundGeolocation.locations.collect { location ->
        Log.d("BGeo", "${location.coords.latitude}, ${location.coords.longitude}")
    }
}

Quickstart walks through the same flow with the parts that matter explained.

Where to go next