# NASA PVT+ vs Ripd

The clearest difference is review sentiment: Ripd at 100% against NASA PVT+'s 25%. Ripd also leads on rating (5.0 vs 4.8). NASA PVT+'s advantage is in-app purchases (none vs 4) and ratings volume (10 vs 2). On price, ads and device support there is nothing between them.

Both are free to download. Ripd sells 4 in-app purchases, starting at $2.99 per month. NASA PVT+ asks for nothing beyond the download.

Ripd holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: NASA PVT+ has 10 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 25% of NASA PVT+'s written reviews are positive against 100% of Ripd's.

## The numbers

| Metric | NASA PVT+ | Ripd |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (10 ratings)](https://appshunter.io/ios/app/nasa-pvt-plus/id1146834402/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/ripd-gym-workout-tracker/id6785011955/reviews)** |
| Number of ratings | **10** | 2 |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | **Free** | Freemium |
| Size | 31 MB | 32 MB |
| Requires iOS | **13.6** | 18.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [NASA](https://appshunter.io/developer/355542146) | [Ivan Shlykov](https://appshunter.io/developer/1896772498) |

## 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


### Ripd

[App page](https://appshunter.io/ios/app/ripd-gym-workout-tracker/id6785011955)

Log your gym workouts quickly and efficiently with this focused tracker. Build custom routines, record sets and reps, and easily compare your current performance to past sessions. Visualize your progress over time with detailed volume, workout counts, and personal records.

**Highlights:** Customizable workout routines, Searchable exercise library, Set-by-set logging, Progress tracking (volume, PRs), Body metric logging, Workout timer

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| 6-Month Premium | $12.99 | per 6 months |
| Annual Premium | $19.99 | per year |
| Lifetime Premium | $29.99 | one-time |


## Frequently asked questions

### Is NASA PVT+ free?

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

### Is Ripd free?

Ripd is free to download, with in-app purchases available.

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

Ripd is rated higher. NASA PVT+ averages 4.8 out of 5 from 10 ratings, while Ripd averages 5.0 from 2 ratings.

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

Neither NASA PVT+ nor Ripd shows ads.

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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.*