This is an unofficial Windows Phone 8.1 app that replicates the functionality of the app nRF UART 2.0 on the Android App store.
This app supports Bluetooth LE devices running a custom Nordic Semiconductor UART service, and allows you to send ASCII / UTF-8 text strings to the BLE device and receive from the device.
The UUIDs used are:
for the Service
for the TX Characteristic Property = Notify
for the RX Characteristic Property = Write without response
The source code for this app can be found at: