Von Frey
for iPhone.
Record paw-withdrawal responses, review estimated thresholds, and export each session.
Now available on the App Store
For preclinical animal research
Developed by Yamen Abbas
Method and research use
The default sequence follows Chaplan’s rat method. The app estimates the 50% withdrawal threshold for each paw. Match its reference forces to your calibrated filaments and approved protocol.
Paw withdrawal is a behavioral measure of mechanical sensitivity, not a direct measure of pain. Von Frey is for preclinical animal research, not human diagnosis or treatment.
