pfod - Control micro-devices from your Andriod. No Android programming required.
Scan and discover your Bluetooth low energy devices with nRF Connect for Mobile.
Sonim BLE Connect is useful to connect BLE accessories with Sonim XP8 devices.
WiFi scanner, network device discovery, speedtest – free (no ads) by Ubiquiti
This App is used for controlling LED lights by BLE(Bluetooth Low Energy).