Purpose To quantify the degree of tremor in patients with tremor or cerebellar ataxia. This allows you to follow the changes of symptoms due to treatment quantitatively. Artificial intelligence (AI) predicts whether the type of tremor is close to one of the three types: cerebellar, tremor, or normal. Method of operation Print the specified PDF file on A4 paper, and trace the spiral from the outside in red (such as a sign pen). Launch this app and take a photo with your smartphone. About th