# PVT WorkFit vs Open Bridge

The clearest difference is rating: Open Bridge at 5.0 against PVT WorkFit's 1.2. PVT WorkFit's advantage is ratings volume (32 vs 5) and device support (3 vs 1). On price, review sentiment, update cadence and ads there is nothing between them.

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

Open Bridge holds the better App Store score, 5.0 against 1.2. That said, the two scores are not equally well evidenced: PVT WorkFit has 32 ratings behind it against 5, so its average is the more settled of the two. Written reviews split almost evenly too, at 0% and 0% positive.

PVT WorkFit ships an update every 2 months, Open Bridge every 5 weeks. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | PVT WorkFit | Open Bridge |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.2 (32 ratings)](https://appshunter.io/ios/app/pvt-workfit/id1238827231/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/open-bridge/id1578358408/reviews)** |
| Number of ratings | **32** | 5 |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 81 MB | 41 MB |
| Requires iOS | **10.0** | 16.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Pulsar Informatics Inc](https://appshunter.io/developer/1154761432) | [Sage Bionetworks, a Not-For-Profit Research Organization](https://appshunter.io/developer/972180603) |

## 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


### Open Bridge

[App page](https://appshunter.io/ios/app/open-bridge/id1578358408)

Contribute your data to scientific research studies focused on cognition. Complete scheduled activities, similar to puzzles or memory tests, directly on your phone. Your identity is protected as the app collects data solely for research purposes.

**Highlights:** Contribute data for research studies, Complete scheduled cognitive activities, Activities resemble puzzles and memory tests, Data used solely for research, Protects user identity, Developed by non-profit research organizations

**In-app purchases:** none


## Frequently asked questions

### Is PVT WorkFit free?

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

### Is Open Bridge free?

Open Bridge is free to download, with no in-app purchases.

### Which has better reviews, PVT WorkFit or Open Bridge?

Open Bridge is rated higher. PVT WorkFit averages 1.2 out of 5 from 32 ratings, while Open Bridge averages 5.0 from 5 ratings.

### Do PVT WorkFit or Open Bridge have ads?

Neither PVT WorkFit nor Open Bridge shows ads.

### Which is updated more often, PVT WorkFit or Open Bridge?

PVT WorkFit ships an update every 2 months, and Open Bridge every 5 weeks. Most recently, PVT WorkFit was updated on October 14, 2026 and Open Bridge on October 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.*