Track your fatigue.
Pace your days.
Wearable-powered fatigue tracking and gentle, personalised pacing. Free for people living with chronic fatigue.

Works with the wearable you already own
Who it’s for
Built for people living with energy-limiting conditions
It does not ask you to do more. It helps you do the right amount, for you, on the day you are actually having.
Know your energy
A daily energy budget drawn from your own sleep, heart rate and activity. See how much you have before you spend it.
Pace your day
Plan gentle activity that stays inside your limits, with early warnings before you push past your threshold into a crash.
Built on your data
A model trained on you, not population averages, learns your personal patterns and gets more useful the more you use it.
See it in action
A closer look at your day
Your energy budget, PEM risk, recovery and a planner that respects your limits. Swipe through the screens people use every day.






“It has made me analyse how I really feel and acknowledge it. When asked, I always just say I’m OK. This made me stop and be honest.”
Sharon D.
Living with chronic fatigue
5,000+
people around the world pacing their days
“The app does a pretty good job of predicting how I’ll feel the next day. I use it every day.”
Grigoriy S.
Long COVID
“It has given me a great insight to my condition and how to manage it better.”
Nigel W.
Chronic fatigue
“It has made me more aware of when I have fatigue and what I have been doing.”
Elizabeth Jane M.
Post-viral fatigue
Start understanding your energy
Free on iOS and Android.