The resulting angle ranges from 0° to ±90° where 0° is vertical and ±90° is horizontal. A positive result indicates that the device was tilted to the right, while a negative result means that it was tilted to the left.
| Run | Result |
|---|---|
| Average | 0.0 |
Subjective Visual Vertical
This tool is intended to be used as an assessment for the perception of verticality. It is by no means a medically accurate test and should never be treated as such.
This assessment works only on devices with an accelerometer (most phones and tablets as well as convertibles).
The simplest way to use this test is by placing your phone at the bottom of a bucket, and fixing it with some sticky tape or sticky pads. Once you've started the test go ahead and place the bucket in front of your face with your phone's display pointing toward you, so that you can't see your surroundings. Then turn the bucket until the displayed line appears to be vertical.
IOS 13:
In oder to use this assessment, you have to grant permission to orientation access
IOS 12:
If you are using the Safari browser and get a popup saying "This feature is not supported in your browser", you can enable the necessary permission in the Safari settings at "Settings > Safari > Privacy & Security > Motion and Orientation Access"
If you get a "Shake to Undo" popup you can disable this feature in "Settings > General > Accessibility > Shake to Undo".