# PlasmaSHIELD vs Prepry

The clearest difference is in-app purchases: PlasmaSHIELD at none against Prepry's 5. PlasmaSHIELD also leads on iOS requirement (12.1 vs 16.0). Prepry's advantage is update cadence (fortnightly vs every 25 months). On price, ads and device support there is nothing between them.

Both are free to download. Prepry sells 5 in-app purchases, starting at $49.99 per month. PlasmaSHIELD asks for nothing beyond the download.

PlasmaSHIELD ships an update every 25 months, Prepry fortnightly. The most recent releases landed on October 5, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | PlasmaSHIELD | Prepry |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (251 ratings)](https://appshunter.io/ios/app/prepry-radiography-exam-prep/id6480055398/reviews)** |
| Number of ratings | — | **251** |
| Positive reviews | — | 88.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 25 months | **Fortnightly** |
| Monetization | — | Subscription |
| Size | 37 MB | 169 MB |
| Requires iOS | **12.1** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Saeid Vossoughi](https://appshunter.io/developer/1485690420) | [Imago AI LLC](https://appshunter.io/developer/1403879712) |

## What reviewers say

### PlasmaSHIELD

[App page](https://appshunter.io/ios/app/plasmashield/id1485690421)

**Features:** macOS Compatibility

**In-app purchases:** none


### Prepry

[App page](https://appshunter.io/ios/app/prepry-radiography-exam-prep/id6480055398)

Prepare for your ARRT® Radiography exam with a comprehensive study tool. It offers a large question bank, adaptive learning, and customizable practice tests to enhance retention and track progress. Study online or offline to master radiographic principles for a successful career.

**Highlights:** Extensive question bank, Adaptive learning with spaced repetition, Customizable practice tests, Progress tracking and analytics, Offline study capabilities, Detailed imaging and anatomy visuals

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Prepry Monthly | $49.99 | per month |
| Prepry Quarterly | $149.99 | per 3 months |
| Prepry 6 Months | $179.99 | per 6 months |
| Prepry Annual | $199.99 | per year |
| Prepry Lifetime | $399.99 | one-time |

**What reviewers like**

- 👍 Easy to use and navigate
- 💡 Informative and helps understanding
- 🚀 Great for studying and board exams
- 👍 User-friendly interface
- 👍 Helpful for radiography topics

**What reviewers complain about**

- 🐛 Progress resets in image review tool
- 💰 Costly and limited without payment
- 🐛 Some bugs exist

**Reported bugs**

- Image review progress resets
- Some bugs present

**Requested features**

- Save progress during image review tool
- Add French language option
- Make all features usable without paying


## Frequently asked questions

### Is PlasmaSHIELD free?

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

### Is Prepry free?

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

### Do PlasmaSHIELD or Prepry have ads?

Neither PlasmaSHIELD nor Prepry shows ads.

### Which is updated more often, PlasmaSHIELD or Prepry?

PlasmaSHIELD ships an update every 25 months, and Prepry fortnightly. Most recently, PlasmaSHIELD was updated on October 5, 2026 and Prepry on October 24, 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.*