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ReadiOne by Fatigue Science

ReadiOne by Fatigue Science

by Fatigue Science

13 ratings
11 reviews
💪 Health & Fitness
Free

Details

Released
September 2, 2016
Updated
September 23, 2026

Features

Developer

Fatigue Science
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About

This app helps workers visualize their real-time and future fatigue levels using a biomathematical model. It analyzes sleep data to predict performance impacts and identify periods of greatest fatigue risk, ensuring fitness for duty.

✓Real-time and future fatigue level visualization (ReadiScores)
✓SAFTE biomathematical sleep analysis
✓Wearable data integration (Gamin, Fitbit)
✓Sleep forecasting engine (ReadiML)
✓Personal risk assessment for 18 hours ahead
✓Alerts for critical fatigue levels
✓Track daily readiness improvements
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What's New in ReadiOne by Fatigue Science

4.6.7

September 23, 2026

This patch fixes an issue that could prevent biometric sign-in from working correctly for some users.

User reviews

Most RecentHighest RatedLowest Rated

No funciona la aplicacion

Se queda solo el poner correo, no avanza mas la aplicación asi llegue los códigos o pin, Mala aplicación
Dd.viza

Stupid

Can’t create an account without a code. Can’t get the code without creating an account.
DBDaisy Beagle

Made me notice my fatigue

I have used this app for a while now and am impressed by it's simplicity. Its fatigue detection is quite accurate. Sometimes when I find myself feeling very tired around midday and look at app, it actually shows a dip in my fatigue score.

I use a Fitbit Versa 2 to track my data and I see this app also supports Garmin, which is great. But it would be great if we could use this app without requiring a tracking device. What if I wanted to switch to a different tracker like an Apple watch?
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AAlphaLyr

Keeps improving

Glad to see updates!
Old review: The app is good. But the new view makes it harder to see the exact same stuff. I agree with having a trends button to see extra information (and further into the past, please) but I shouldn't have to go there to see things that used to be on the home screen.
WWKK_10

Response from developer

Hi there, Thanks for your feedback! We've released a few new versions of our Readi app since 2017, which we hope address your user experience concerns, putting the most relevant information up front. Let us know if you have access or have further feedback! Please don't hesitate to reach out at www.fatiguescience.com if you'd like more info! Rob

Logs me out of app randomly

When it works it’s great but from time to time it logs me out of the app and I can’t log back in. Instead of logging in with username and password it promps you to put in your email so it can send you a link. Well no link is ever sent making it impossible to sign in for days on end.
SSanches12

Response from developer

Hi there, Thanks for your feedback and apologies for the bugs you've encountered regarding login in version 3.2.2. We recently released version 3.2.4 which we believe identifies and resolves the bug you had experienced. Please don't hesitate to reach out to us directly via either www.fatiguescience.com/contact or via the Help menu in your Readi app (More > Help) if you need more help or have more feedback. Thanks much, Rob

See 6 more reviews

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FAQ

What is ReadiOne's primary function?

ReadiOne provides personal fatigue risk assessments and predicts performance impacts based on sleep analysis. It helps users visualize their fatigue levels and identify periods of greatest risk exposure.

How does ReadiOne analyze sleep?

ReadiOne uses the SAFTE biomathematical model to analyze sleep data. This data can come from wearable devices like Gamin or Fitbit, or be estimated by the ReadiML sleep forecasting engine.

What kind of information does ReadiOne provide after waking up?

Upon waking, ReadiOne provides a personal risk assessment, known as a 'ReadiScore,' for each of the 18 hours ahead. This allows users to easily see when they are likely to be at their best and worst.

Does ReadiOne require an enterprise license?

Yes, use of ReadiOne requires an enterprise license to the Readi Fatigue Risk Management Platform. It is designed for organizational use rather than individual purchase.

What devices does ReadiOne support?

ReadiOne is available for iPhone, iPad, and iPod. It is designed to be accessible on Apple mobile devices.

How often is ReadiOne updated?

The latest version, 4.6.0, was released on January 19, 2026. While the last update date is in the future, this indicates the app is actively maintained and developed.

What is the age rating for ReadiOne?

ReadiOne has an age rating of 4+. This means it is considered appropriate for users aged 4 and above.

Does ReadiOne have ads?

No, ReadiOne does not contain advertisements. The app is free to use and does not display any ads to users.