Best Practice: Bluetooth Low Energy in Different Platforms

Bluetooth Low Energy (BLE) is a core technology behind fitness trackers, smart home devices, medical equipment, and many other IoT products. When building a BLE-enabled app, you often face a choice: native iOS, Flutter, or React Native?

Rather than relying on third-party BLE libraries for Flutter or React Native, the approach I recommend — and practice — is to write all BLE logic in native Swift using CoreBluetooth, then expose it to each cross-platform framework via its native bridge mechanism. For React Native, that means Native Modules. For Flutter, that means Platform Channels.

This gives you full control of the BLE stack, consistent behavior across all your projects, and zero dependency on external BLE packages that may lag behind iOS SDK updates.