DDBluetooth is a useful & efficient tool for people who are engaged in developing Bluetooth / BLE products.
It performs bluetooth central role that enables users to check some benchmark and errors.
Also, it allows ones to quickly test basic operations (such as indication, read, write, and notification) on every discovered characteristics.
The source code and library of this application is available on GitHub:
https://github.com/ickw/DDBluetooth