This was a commission work. Air System Mx it's a mobile app that connects to a Bluetooth LE enabled board to control the car's air suspension.
This app was built using React Native, React Native BLE PLX and Redux for the state manager.
The app scan for a custom service uuid so only the devices we care about show on scan. One we select the device we want to connect, we send four bytes of info to a custom characteristic uuid every time the user press a button.
It also has programmable buttons that can be configured in the app and uses AsyncStorage to persist the data.
You can download the app through the App Store and the Play Store, but you will need a proprietary board to see the main dashboard.