iPhone App for Parkinson Symptoms

LiftLabs recently released a very useful free iPhone app for those with Essential Tremor and Parkinson’s Disease. This app could revolutionize screening for Parkinson’s for many African Americans who don’t know their family health history or risk.

Feedback from a lot of patients with Essential Tremor and Parkinson’s Disease led to the development of the tremor measurement and monitoring app. Since many people have smart phones (and because of the computing power they now have), we thought it would be useful to create an app that can do just that.

Lift Pulse is a highly intuitive, yet powerful app that is calibrated to measure your tremor frequency and amplitude. To get a reading, hold your phone in your hand and press record. The gray bar will begin to fill as the recording begins. Once the bar is full (after about 10 seconds) the app will move to the analysis screen.

There, you can see a frequency spectrum. Your tremor measurement should appear as a peak between 5 and 10 Hz as shown in the figure above. The tremor measurement and monitoring app automatically finds this peak and integrates it to calculate your overall tremor amplitude in centimeters. The app senses tremor in all directions (x,y,z) of the phone and calculates your overall magnitude.

Lift Pulse allows you to compare your tremor to a pre-set baseline. To set your baseline (this could be on an average day for you), take a reading and then tap on the circle showing your amplitude in Cm. Any future tremor measurement and monitoring readings will be compared to this saved baseline and the circle showing your amplitude will change (from blue to red) depending on how much above or below the baseline you are. Currently, the tremor measurement and monitoring app is free!  If you have any suggestions, please leave a comment or contact manufacturer at info@lynx-design.com.


Dr. Jerome Lisk is a fellowship-trained movement disorder neurologist, specializing in the treatment of Parkinson’s disease, essential tremor, cervical dystonia, Huntington’s chorea and other movement disorders. Content for this article is provided via Southern California Movement Disorder website. 

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