# NASA PVT+ vs PVT WorkFit

The clearest difference is rating: NASA PVT+ at 4.8 against PVT WorkFit's 1.2. NASA PVT+ also leads on review sentiment (25% vs 0%). PVT WorkFit's advantage is ratings volume (32 vs 10) and iOS requirement (10.0 vs 13.6). On price, update cadence, ads and in-app purchases there is nothing between them.

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

NASA PVT+ holds the better App Store score, 4.8 against 1.2. Both are backed by a comparable volume of ratings — 10 and 32 respectively. Written reviews point the same way: 25% of NASA PVT+'s written reviews are positive against 0% of PVT WorkFit's.

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

## The numbers

| Metric | NASA PVT+ | PVT WorkFit |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (10 ratings)](https://appshunter.io/ios/app/nasa-pvt-plus/id1146834402/reviews)** | [1.2 (32 ratings)](https://appshunter.io/ios/app/pvt-workfit/id1238827231/reviews) |
| Number of ratings | 10 | **32** |
| Positive reviews | **25.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | Free | Free |
| Size | 31 MB | 81 MB |
| Requires iOS | 13.6 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [NASA](https://appshunter.io/developer/355542146) | [Pulsar Informatics Inc](https://appshunter.io/developer/1154761432) |

## What reviewers say

### NASA PVT+

[App page](https://appshunter.io/ios/app/nasa-pvt-plus/id1146834402)

This app provides a validated tool for conducting psychomotor vigilance tests, crucial for sleep, alertness, and performance research. It offers multiple study frameworks, including simple tests, basic multi-day studies, and specialized aviation research protocols.

**Highlights:** Psychomotor Vigilance Test (PVT), Karolinska Sleepiness Scale (KSS), Sleep Diary, Simple PVT mode, Basic Study framework, Aviation Study framework

**Features:** Vision Pro support

**In-app purchases:** none


### 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


## Frequently asked questions

### Is NASA PVT+ free?

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

### Is PVT WorkFit free?

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

### Which has better reviews, NASA PVT+ or PVT WorkFit?

NASA PVT+ is rated higher. NASA PVT+ averages 4.8 out of 5 from 10 ratings, while PVT WorkFit averages 1.2 from 32 ratings.

### Do NASA PVT+ or PVT WorkFit have ads?

Neither NASA PVT+ nor PVT WorkFit shows ads.

### Which is updated more often, NASA PVT+ or PVT WorkFit?

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