A free app for Android, by Nordic Semiconductor ASA.

The Nordic nRF Logger API provides a way for developers to view log sessions created by other applications.

nRF Logger is an nRF Connect and nRF Toolbox application that allows developers to view connection events, sessions, and errors in a public, easy-to-use, and intuitive manner.

With nRF Logger installed on your device, you can:

View the connection state of your device and all connected devices.View your network environment, including all available networks, network interfaces, and network traffic.Get all session events in a given time period.Share your log sessions with other developers.View the log session of your application.