Example code for reading and plotting all currently available sensors
Serial Sensor is free, you can download it from the play store.
With an Arduino you can either read the sensor data via USB or Bluetooth (ony HC-Modules are currently supported). The provided example code should be self-explanatory.
You can send sensor data to your pc via the "Network" connection. There are two use-cases, which are explained below. Furthermore two scripts are provided to either plot or just receive and print the sensor data in real-time.
Connect your Phone and PC to the same W-Lan. Get the IP-Address of your PC and enter it inside the app's connection menu (for the Network connection). Add the same IP-Address inside the python script. That's it, you are good to go.
You can receive data via USB connection only but using the "Network" connection mode. To do so, connect your Phone to your PC and enable USB-Thethering inside your Phone's settings. Your PC gets then a IP address assigned, which you can then use like for the W-Lan use-case.