FatigueSense

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FatigueSense is an innovative research-based app exploring digital biomarkers of fatigue.

Using data from wearable devices alongside user-reported experiences, it helps track, predict, and manage fatigue in everyday life.

21/08/2026

Five thousand of you. Thank you. 💙

FatigueSense now supports over five thousand people living with ME/CFS, long COVID, POTS and fibromyalgia, and the app now speaks five languages: English, Dutch, French, German and Spanish.

We have written up what you have taught us. A few things that surprised us:

☀️ Mornings are the most expensive part of the day. Getting up, washing and dressing can take a big share of a whole day's energy, before anything most people would call "activity". If you have ever wondered why you are exhausted by 9am, you were not imagining it.

🌙 A lot of you do not live on a calendar day at all. Awake at 3am, asleep at noon. Most health apps assume midnight starts your day, which quietly hides your worst hours.

🛏️ Lying still is not the same as resting. If your heart is racing while you lie there, that is not recovery, whatever your watch says.

It is all in the blog, written for patients, families and clinicians alike. Have a read, and tell us in the comments what your wearable gets right about your body, and what it gets plainly wrong.

Read the full blog here:

Wearable-powered fatigue tracking and personalised pacing, free for people living with chronic fatigue, Long COVID, cancer-related fatigue, MS, and related conditions.

16/06/2026

We just hit 1,000+ people using FatigueSense.

One month ago, this app launched. Today, people in the UK, US, Netherlands, Australia and more are using it every day to track their energy envelope, get alerted before they go too far, and prevent crashes before they happen.

The app works with whatever wearable you already have (Apple Watch, Fitbit, Garmin, Oura, Samsung Galaxy Watch, WHOOP, and more) or just your iPhone. No subscription. No premium version. Free, always, for the pacing features that matter.

If you know someone who has just been diagnosed with ME/CFS, long COVID, or any disabling fatigue condition and is trying to understand pacing, please share this with them. Finding the right tools early makes a real difference.

You can read our 1 month impact report here: https://fatiguesense.com/blog/one-month-1000-lives

06/06/2026

Know your fatigue before it hits. FatigueSense turns your smartwatch into an early-warning system for post-exertional crashes, learns your personal limits, and helps you pace your day before the crash, not after.
Built for ME/CFS, Long COVID, cancer-related fatigue, and persistent fatigue. Free, and being built as part of research at Newcastle University.
Download free on the App Store and Google Play, and follow for more.

03/06/2026

For people living with ME/CFS, Long COVID, fibromyalgia, and other fatigue-related conditions, the challenge isn’t always the activity itself. It’s what happens afterwards.

Post-Exertional Malaise (PEM) can occur 12 to 72 hours after physical or mental exertion. By the time symptoms appear, the damage may already be done.

That’s why we built the PEM Monitor in FatigueSense.

Using data from your wearable device 📊, including Heart Rate Variability (HRV), Resting Heart Rate (RHR), and activity patterns, FatigueSense identifies early warning signals that may indicate an increased risk of PEM before you feel it.

✔ Personalised to your unique baseline, not population averages
✔ Explains which physiological signals are elevated and why
✔ Provides practical recommendations to help reduce your risk of a crash 🧠
✔ Helps you better understand how your body responds to exertion

If you’re managing ME/CFS, Long COVID, fibromyalgia, or any condition where Post-Exertional Malaise is a concern, FatigueSense is designed to help you make more informed decisions about your energy and activity levels.

Download FatigueSense today and start tracking your PEM risk 📱

15/04/2026

🚀 Welcome to FatigueSense

FatigueSense is a research-driven app designed to help people better understand, track, and manage fatigue in their daily lives.

The app identifies patterns in your energy levels and provides personalised insights to support better decisions throughout the day.

This project is part of ongoing digital health research focused on improving how fatigue is monitored and managed, especially for individuals living with chronic conditions.

We’re excited to start this journey and share updates, insights, and progress with you.

🌐 Learn more: www.fatiguesense.com

Follow the page to stay updated and be part of the journey.

Free research beta: connect your smartwatch, log fatigue, and review your patterns over time.

Address

The Medical School, Newcastle University, Framlington Place
Newcastle Upon Tyne
NE24HH

Telephone

+447909164771

Website

http://www.fatiguesense.com/

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