Track your fatigue.
Pace your days.
Wearable-powered fatigue tracking and personalised pacing, free for people living with chronic fatigue.
iOS
Android
Free · iPhone and iPad
Works with your existing wearable
Built for people living with energy-limiting conditions
FatigueSense is not a fitness app. It does not ask you to do more. It helps you do the right amount, for you, on that day.
Personal use
Understand your body, manage your energy
Connect your wearable, log how you feel, and let FatigueSense find the patterns. Get a daily forecast and pacing plan shaped by your own baselines, not population averages.
Research and clinical
A remote study platform for any health metric
Run studies on fatigue, stress, depression, activity, or any outcome you need to track. Design your own EMA questionnaires, use wearables participants already own, and manage everything through a dedicated researcher portal.
What FatigueSense tracks
Six digital biomarkers from your wearable and daily check-ins, combined into one picture of your energy.
HRV
Heart rate variability at rest, a window into your autonomic recovery state.
Sleep stages
Deep, light, and REM tracked nightly to show how sleep shapes your next day.
Step activity
Daily movement monitored within your personalised energy envelope.
Fatigue assessment
Twice-daily check-ins covering energy, symptoms, and brain fog in under a minute.
Pacing score
Your daily activity budget, recalculated automatically from your baseline.
Symptom trends
Patterns in fatigue, pain, and cognition tracked across weeks and months.
How it works
Setup takes under 5 minutes. Results start on day one.
01
Wear your device, log how you feel each morning
Connect your existing wearable or use manual entry. A daily check-in takes under a minute.
02
FatigueSense learns your personal baselines
Over 14 days, a model trained exclusively on your data activates. Not population averages. You.
03
Get daily pacing guidance tuned to your energy envelope
Tomorrow's fatigue forecast, today's safe step range, and early warnings before you reach your limits.
What people say
Used by participants across chronic fatigue, Long COVID, cancer-related fatigue, MS, RA, and related conditions.
“It has made me think more about how I actually feel. When asked, I always just say I'm OK thanks. But it has made me analyse how I really feel and acknowledge it.”
Sharon D.
“The app does a pretty good job of predicting how I'll feel the next day. I use it every day.”
Grigoriy S.
“It has given me a great insight to my condition and how to manage it better.”
Nigel W.
“It has made me more aware of when I have fatigue and what I have been doing.”
Elizabeth Jane M.
Built for research. Ready for clinical teams.
A flexible remote study platform for fatigue, stress, depression, physical activity, or any health metric your study requires. Bring your own questionnaires, use commercial wearables your participants already own, and get clean exportable data. Developed with Newcastle University and NIHR.
No new hardware. Just a smarter way to use what you have.
Your wearable already collects the data. FatigueSense turns it into something useful for people with energy-limiting conditions.
iOS
Android
No smartwatch? FatigueSense also works with manual daily entry.
Common questions
No. FatigueSense is a health tracking and insights tool. It does not diagnose, treat, or cure any condition. Predictions are intended to support personal reflection, not clinical advice.
People living with energy-limiting conditions including chronic fatigue, Long COVID, cancer-related fatigue, MS, rheumatoid arthritis, and post-viral fatigue.
Yes. FatigueSense is completely free on iOS and Android.
Apple Watch, Garmin, Oura Ring, Withings / ScanWatch, WHOOP, Polar, Huawei, Xiaomi / Amazfit, and Fitbit.
Fitbit, Google Pixel Watch, Garmin, WHOOP, Oura Ring, Withings / ScanWatch, and Polar. Support is expanding.
Android is available on Google Play. Search for FatigueSense or visit the Google Play Store directly from the website.
Predictions improve from day one. At 14 days your personal model activates, trained entirely on your own data.
Start understanding your energy
Available free on iOS and Android.
iOS
Android