Effective 28 August 2026

Terms of use

This free utility offers a practical indication of pointer reliability. It does not provide medical advice or certify a device.

Appropriate use

Use results as one signal when deciding whether to recalibrate or adjust a setup. Do not use the app for diagnosis, safety-critical control, or as a replacement for instructions from your eye-tracker manufacturer or clinician.

Device-dependent results

Scores depend on screen size, pointer settings, hardware, software drivers, posture, lighting, and the way the check is completed. Thresholds are transparent but are not universal clinical standards.

No warranty

The software is provided “as is,” without warranty, under the MIT License. To the extent permitted by law, the authors are not liable for loss resulting from its use.

Open source

You may inspect, copy, and modify the software under the terms in the repository’s MIT License.