HyperIMU is a free utility application from developer ianovir that can help users turn their devices into an Inertial Measurement Unit, which can detect motion from objects. It can measure their force, angular rate, and orientation relative to their position. It runs in real-time and can collect and save data for reference.

Makeshift IMU device

The HyperIMU app lets you turn your device into a makeshift inertial measurement unit for detecting motion in your body or objects using its built-in sensors, such as gyroscopes, accelerometers, and GPS. All readings happen in real-time, and the data is offloaded to the secure HIMUServer and can be saved as a CSV or JSON.

You can also request a breakdown of all available sensors in your device and manually select which ones you want to read and derive data from to create your algorithms. This app requires fairly deep knowledge of how IMU devices work to maximize its potential. 

Niche but handy

The HyperIMU app is an impressive tool for creating impromptu measuring devices used for all kinds of applications that rely on motion detection and data. It's quite robust and offers extensive information on various readings. If you're in need of this type of app solution, this is a great option worth checking out.