iPhone spirit level: accuracy & calibration

To use your iPhone as a spirit level, you only need the right app. In this practical tip, we show you how precise you can calculate and how you calibrate the spirit level.

Calibrate iPhone spirit level: calibration of the motion sensor

First, download a spirit level app for your iPhone. In this article we refer to the free application iHandy spirit level as an example.

1. Open the app and place your iPhone on a flat surface - for example on the floor. The spirit level should now indicate that the bottom is in the water.
2. If this is not the case, you can calibrate the spirit level on the surface. To do this, press the align icon at the bottom left of the app (see screenshot).
3. The water bubble jumps to the center and assumes the alignment as a new zero point. For example, you can manually calibrate the alignment of a slightly sloping ceiling to hang pictures or posters horizontally to the ceiling.

IPhone spirit level accuracy

The accuracy of the spirit level can differ depending on the app. In the case of the "iHandy spirit level" app, you can record angles of up to 20 °. In addition, the sensor only reacts to the orientation of the screen format. For example, to align the leg length of a table so that the table is level, the accuracy of the iPhone spirit level is just as good as a cheap spirit level from the hardware store.