# ReadiOne by Fatigue Science vs Fatigue Test TalTech

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.

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.

## The numbers

| Metric | ReadiOne by Fatigue Science | Fatigue Test TalTech |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.8 (13 ratings)](https://appshunter.io/ios/app/readione-by-fatigue-science/id1042111872/reviews)** | — |
| Number of ratings | **13** | — |
| Positive reviews | 27.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free | — |
| Size | 62 MB | 21 MB |
| Requires iOS | **15.0** | 16.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Fatigue Science](https://appshunter.io/developer/1042111871) | [Tallinn Tehnikaulikool](https://appshunter.io/developer/1472331275) |

## What reviewers say

### ReadiOne by Fatigue Science

[App page](https://appshunter.io/ios/app/readione-by-fatigue-science/id1042111872)

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:** Vision Pro support

**In-app purchases:** none


### Fatigue Test TalTech

[App page](https://appshunter.io/ios/app/fatigue-test-taltech/id6449683047)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked 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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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*