Earphones Acceleration Sensor app for iPhone and iPad

It is an application that acquires sensor data from Airpods and saves it in a CSV file.
Please note that it will not work unless it is connected to Airpods.
Only one graph is displayed, but multiple data are saved in the file. For example, in the case of acceleration, x-axis, y-axis, z-axis, and combined acceleration data are saved.

You can select one from four types of sensors in the settings and measure.
It can be measured only with Airpods connected, and the elapsed time from the start of measurement is also recorded.

How to Use
1. Connect Airpods to your iPhone.
2. Select the sensor of the data you want to acquire from the settings.
3. Enter the name of the file to save.
4. Press start.
5. Press stop. (Saved in a file on the terminal.)

Sensor type
userAcceleration
You can get four user acceleration data: x-axis, y-axis, z-axis, and combined acceleration(√(x*x + y*y + z*z)).

gravity
You can get four gravitational acceleration data: x-axis, y-axis, z-axis, and combined acceleration(√(x*x + y*y + z*z)).

rotationRate
You can get four angular velocity data of x-axis, y-axis, z-axis, and combined acceleration(√(x*x + y*y + z*z)).

attitude
You can get data about three postures, pitch, roll, and yaw.