# PVT WorkFit vs AC UBY

The clearest difference is update cadence: PVT WorkFit at every 2 months against AC UBY's every 23 months. PVT WorkFit also leads on iOS requirement (10.0 vs 17.6). On price, ads, in-app purchases and device support there is nothing between them.

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

PVT WorkFit ships an update every 2 months, AC UBY every 23 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | PVT WorkFit | AC UBY |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.2 (32 ratings)](https://appshunter.io/ios/app/pvt-workfit/id1238827231/reviews)** | — |
| Number of ratings | **32** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 23 months |
| Monetization | Free | — |
| Size | 81 MB | 5 MB |
| Requires iOS | **10.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Pulsar Informatics Inc](https://appshunter.io/developer/1154761432) | [Corehealth Technologies Inc.](https://appshunter.io/developer/354559799) |

## What reviewers say

### PVT WorkFit

[App page](https://appshunter.io/ios/app/pvt-workfit/id1238827231)

This app administers the Psychomotor Vigilance Test (PVT) to objectively measure alertness and reduce workplace risks. It is scientifically validated and unaffected by individual differences, providing immediate performance scores for real-time decision-making.

**Highlights:** Gold-standard Psychomotor Vigilance Test (PVT), Robotically calibrated for hardware latency, Immediate performance score viewing, Synchronize data from distributed sites, Role-based access control, Multi-lingual support

**Features:** macOS Compatibility

**In-app purchases:** none


### AC UBY

[App page](https://appshunter.io/ios/app/ac-uby/id1635503291)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PVT WorkFit free?

PVT WorkFit is free to download, with no in-app purchases.

### Is AC UBY free?

AC UBY is free to download, with no in-app purchases.

### Do PVT WorkFit or AC UBY have ads?

Neither PVT WorkFit nor AC UBY shows ads.

### Which is updated more often, PVT WorkFit or AC UBY?

PVT WorkFit ships an update every 2 months, and AC UBY every 23 months. Most recently, PVT WorkFit was updated on November 6, 2026 and AC UBY on November 3, 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.*