Understand long-term patterns that matter.
Track weeks/months/years, focus on the symptoms that reflect how you feel, and view timeline overlays for meds, diet, stress, sleep and activity.
Compare cause and effect instantly.
Superimpose two time periods to see how starting/changing meds, a diet, more sleep & exercise or reduced stress changed your symptoms (to be implemented).
See your tremor at a glance.
Colour-coded daily diary (green → red) that shows tremor & movement plus your notes on meds, diet, exercise and stress (to be implemented).
Background
Why we created this app — a story familiar to many living with Parkinson’s
For many people with Parkinson’s Disease, daily life is filled with small but important questions:
Why am I shaking more today? Did I sleep poorly? Is my medication wearing off too soon? Why do some days feel easier — and others so much harder?
Symptoms like tremor, dyskinesia, and slowness aren’t constant. They rise and fall throughout the day, shaped by medication timing, stress, sleep, food, activity — and sometimes by the unpredictability of Parkinson’s itself. These things change in long term trends which can be clearly linked to lifestyle or medication changes. Yet most people are left guessing, trying to remember how they felt last week or whether a new treatment is truly helping.
Our mission is to change that.
We want to give people a clearer window into their own symptoms, to help them see patterns and trends, understand their bodies, and feel more in control — with the support of our app.
What PD-Trends Does
PD-Trends helps people with Parkinson’s understand their symptom patterns and trends by combining smartwatch measurements with daily-life information into clear, meaningful insights.
PD-Trends is a smartphone app, currently only available for Apple Watch+iPhone, that helps people with Parkinson’s understand how their symptoms fluctuate by combining high-resolution smartwatch data with daily-life information. Tremor signals are captured using the MM4PD API (Powers et al., 2021), while movement, sleep, and other health metrics are retrieved from Apple Health. These data streams are merged on the device and converted into time-resolved graphs—at 10-minute, hourly or daily resolution—allowing users to see how medication, sleep, stress, diet, or activities relate to changes in tremor, dyskinesia, and bradykinesia. Two types of graphs are shown of either (i) the day or week average pattern or (ii) the long-term trends up to months or years. Data are collected at 10 min resolution but simultaneously averaged per hour and across 1, 7 or 28 days to focus on either short-term fluctuations or on the longer macro-trends.
Planned future versions will (i) add a daily diary account of medication and life events potentially explaining symptom change and visualize this in graphic overlays; (ii) provide an automatically generated symptom/medication/lifestyle summary report with AI-based analysis that can be shared with others; and finally (iii) support for Android-connected devices like Garmin through custom-developed algorithms by our partners with a dedicated Android app.
Testimonials
Hear directly from our users about how PD-Trends makes managing Parkinson’s easier and more insightful. From tracking daily symptoms to understanding the impact of lifestyle choices, our community shares real experiences and practical benefits. See how PD-Trends helps people take control of their health and make informed decisions alongside their healthcare providers.
“Now having used the first release of PD-Trends for 6 months I found the insights it offers into long term trends and the daily or weekly patterns of my symptoms fascinating and helpful. It provides graphic resolution from 10 minutes to days as required depending the aspect you focus on, and it averages across 1-4 weeks to eliminate noise and better view the long-term trends. It shows not only various tremor intensities, but also diskinesia, slowness and balance as potential PD symptoms. It allows viewing any correlations to factors like sleep quality (and soon also heart rate and variability). I found this extremely helpful to understand my own responses to medication, diet, sleep, exercise, and stress relief, but also in my visits to my neurologist to discuss my symptoms and needs. I look forward to seeing implemented (as planned) into the app the possibility to record medication type and intake, and other relevant lifestyle information, to be made viewable as overlays in the graphs of trends and patterns. Also, the planned possibility to export a summary report analysis to show to others will be very helpful”.
Maarten Jongsma
Parkinson’s Advocate
Interested?
If you’re interested in supporting, partnering, or using PD-Trends, please contact us to get involved in advancing this innovative, user-friendly app for people with Parkinson’s.
Our team
A passionate family team dedicated to making daily life with Parkinson’s easier
Maarten Jongsma
researcher and a PwPD
Pieter Jongsma
data analist, app developer
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