Comparison

ReadiOne by Fatigue Science vs Fatigue Test TalTech

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ReadiOne by Fatigue Science

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.

Highlights
  • 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
Features
Read full description

ReadiOne is a personal application designed for operators or workers to visualize their realtime and future fatigue levels (ReadiScores) and timing of greatest fatigue risk exposure, ensuring that users are fit for duty during the shift ahead. ReadiOne uses the SAFTE biomathematical model to analyze your sleep in order to quantify and predict the impact it will have on your performance for the day ahead. Sleep can come from wearable data (ReadiWatch, Gamin, or Fitbit) or can be estimated by the ReadiML sleep forecasting engine. Any disruption to your normal sleep, whether from sleep loss, jet lag or night duty, can significantly impact your ability to perform safely and effectively. Specifically, sleep impacts your cognitive performance, reaction time, and lapse likelihood (propensity for a micro sleep). When you wake up, open the ReadiOne application and you'll receive a personal risk assessment ("ReadiScore") for each of the 18 hours ahead, enabling you to easily visualize if and when you'll be at your best and worst in the day ahead. You'll also be able to track daily improvements to your readiness over time, and you'll receive alerts before your fatigue may reach critical levels. ReadiOne is based on validated algorithms developed with 25 years of sleep research from the US Army Research Lab, and available exclusively from Fatigue Science. Use of ReadiOne requires an enterprise license to the Readi Fatigue Risk Management Platform. Please see ReadiSupervise by Fatigue Science for supervisor mobile fatigue management tools or visit https://app.fatiguescience.com for web based fatigue management tools.

About

Fatigue Test TalTech

Features
Read full description

This app is designed to collect data to assess mental fatigue through a series of tests where we assess your reaction speed, tremors and other data to provide a dataset that we can use to create a future rating system. This research is conducted by researchers at the Tallinn University of Technology Department of Software Science. You can ask to delete your data from our databases at any time. If you have any technical questions and concerns regarding the practices of this App, please contact us by sending an email to elli.valla@taltech.ee.

Screenshots

ReadiOne by Fatigue Science4 screens
Fatigue Test TalTech3 screens

Verdict

The call

The clearest difference is update cadence: Fatigue Test TalTech at weekly against ReadiOne by Fatigue Science's every 2 months. ReadiOne by Fatigue Science's advantage is device support (3 vs 1). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ReadiOne by Fatigue Science ships an update every 2 months, Fatigue Test TalTech weekly. The most recent releases landed on November 2, 2026 and November 7, 2026 respectively.

Scorecard2 real differences · 8 level
ReadiOne by Fatigue Science versus Fatigue Test TalTech: the parameters behind the verdict, then further details
ParameterReadiOne by Fatigue ScienceFatigue Test TalTech
PriceFreeFree
Rating3.8 (13 ratings) — better—
Positive reviews27.3% of reviews—
Number of ratings13 — better—
Update frequencyEvery 2 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.0 — better16.2
Further details — not scored
Size62 MB21 MB
Age rating4+4+
DeveloperFatigue ScienceTallinn Tehnikaulikool

In-app purchases

None

ReadiOne by Fatigue Science

No in-app purchases

None

Fatigue Test TalTech

No in-app purchases

Questions

Is ReadiOne by Fatigue Science free?
ReadiOne by Fatigue Science is free to download, with no in-app purchases.
Is Fatigue Test TalTech free?
Fatigue Test TalTech is free to download, with no in-app purchases.
Do ReadiOne by Fatigue Science or Fatigue Test TalTech have ads?
Neither ReadiOne by Fatigue Science nor Fatigue Test TalTech shows ads.
Which is updated more often, ReadiOne by Fatigue Science or Fatigue Test TalTech?
ReadiOne by Fatigue Science ships an update every 2 months, and Fatigue Test TalTech weekly. Most recently, ReadiOne by Fatigue Science was updated on November 2, 2026 and Fatigue Test TalTech on November 7, 2026.

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