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.
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.
- 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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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.
Fatigue Test TalTech
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
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.
| Parameter | ReadiOne by Fatigue Science | Fatigue Test TalTech |
|---|---|---|
| Price | Free | Free |
| Rating | 3.8 (13 ratings) — better | — |
| Positive reviews | 27.3% of reviews | — |
| Number of ratings | 13 — better | — |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone, iPad, iPod — better | iPhone |
| Requires iOS | 15.0 — better | 16.2 |
| Further details — not scored | ||
| Size | 62 MB | 21 MB |
| Age rating | 4+ | 4+ |
| Developer | Fatigue Science | Tallinn Tehnikaulikool |
In-app purchases
ReadiOne by Fatigue Science
No in-app purchases
Fatigue Test TalTech
No in-app purchases
Questions
Is ReadiOne by Fatigue Science free?
Is Fatigue Test TalTech free?
Do ReadiOne by Fatigue Science or Fatigue Test TalTech have ads?
Which is updated more often, ReadiOne by Fatigue Science or Fatigue Test TalTech?
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