FatigueSense

FatigueSense

Manage your Fatigue levels

37 ratings
43 reviews
Free

Details

Released
April 9, 2026
Updated
October 30, 2026

Features

FatigueSense screenshot #1 for iPhone
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FatigueSense screenshot #6 for iPhone
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About

This app helps you manage energy levels and pace your day to avoid crashing. It links wearable data with daily check-ins to show activity, recovery, and fatigue relationships over time. Designed for individuals with persistent fatigue conditions.

✓Daily energy budget tracking
✓Early PEM signal alerts
✓Strain, recovery, and sleep tracking
✓Activity planning within energy envelope
✓Log crashes and check-ins
✓Wearable device integration
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+3

What's New in FatigueSense

2.0.6

October 30, 2026

App improvements

User reviews

Great for ME/CFS!

I’ve been sick for about four years. After using this app for almost a month, I have a better understanding of my baseline that I had in all of the four years going. Highly recommend!

Beyond Grateful

I am honestly in happy tears how this app is helping me. I’ve had CFS for a very long time, and was struggling to understand the pattern that kept me only able to drive 1-2 days per month, and why after one day of being more active led to weeks of being bedbound. This app clearly showed me how severe PEM has been, and has given me hope that I can manage it better. I felt so overwhelmed for so many years, doctors and PT didn’t understand and gave me advice that made me worse, and I finally feel like I have real help now. I was struggling to pace all these years without this needed data. God bless the makers of this app.
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Interesting, Maybe

I was referred to this by someone with similar symptoms. It's a bit clunky to use -- not the most intuitive interface. It also records PEM, long crashes (days to weeks), and daily energy plummets strangely. I haven't quite figured out to record these properly, especially when there are multiple episodes simultaneously of multiple types. And the first week's predictions are simply awful. I've been in a 3 week crash layered with PEM episodes and daily energy crashes, so that's my baseline with the app -- which says that my metrics show no indication of risk of PEM while I'm up to my eyeballs with it. I'll trial it a bit longer, but I'm skeptical atm.
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This may be helpful

Finally may have found an app that will help me.
A steep learning curve and must get into the habit of daily journaling but that’s for my benefit.
Lots of support & assistance

Great app

This app is great for tracking and predicting crashes/PEM/fatigue. It takes data from your wearable and predicts how your days will be and whether to take things easy. After the initial input for the first 5 or 6 days after joining, it judges how you will be after you’ve passed your baselines. It’s been majorly accurate - even the past couple of weeks I haven’t entered my personal daily data, it’s still been accurate just connecting to my Apple Watch and tells me when I need to take it easy. Great app.
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FAQ

What is FatigueSense?

FatigueSense is a wellness and self-management app designed to help users understand and manage their energy levels. It links data from wearables with daily check-ins to provide insights into activity, recovery, and fatigue.

Who is FatigueSense designed for?

FatigueSense is specifically designed for individuals living with persistent fatigue conditions, including ME/CFS, long COVID, fibromyalgia, and cancer-related fatigue.

Does FatigueSense provide medical advice?

No, FatigueSense is assistive and statistical, complementing user judgment. It is not a medical device and does not diagnose or treat any condition. Always consult a healthcare professional for health concerns.

What devices does FatigueSense work with?

FatigueSense works with a variety of wearables including Apple Watch, Oura, Garmin, WHOOP, Polar, Withings, and Fitbit. Manual daily entry is also an option if no device is available.

How often is FatigueSense updated?

The latest version of FatigueSense is 2.0.6, and it was last updated on 2026-10-30. Updates typically occur to improve features and reliability.

Is FatigueSense free to use?

Yes, FatigueSense is available for free. There are no in-app purchases or subscription fees associated with its use.

What is the age rating for FatigueSense?

FatigueSense has an age rating of 17+. This is based on its content and intended use for managing complex health conditions.

Does FatigueSense have ads?

No, FatigueSense does not contain advertisements. It is designed to provide a focused and uninterrupted user experience.