# Sterile Processing Prep vs CRCST Exam

The clearest difference is price: CRCST Exam at Free against Sterile Processing Prep's $2.99. CRCST Exam also leads on iOS requirement (15.1 vs 26.1). Sterile Processing Prep's advantage is in-app purchases (none vs 3). On ads and device support there is nothing between them.

CRCST Exam is free to download; Sterile Processing Prep costs $2.99 up front. CRCST Exam sells 3 in-app purchases, starting at $7.99 per 7 days. Sterile Processing Prep asks for nothing beyond the download.

## The numbers

| Metric | Sterile Processing Prep | CRCST Exam |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 5 MB | 70 MB |
| Requires iOS | 26.1 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 9+ | 12+ |
| Developer | [Tracy Gates](https://appshunter.io/developer/1065459770) | [Wiktor Pabich](https://appshunter.io/developer/1842657816) |

## What reviewers say

### Sterile Processing Prep

[App page](https://appshunter.io/ios/app/sterile-processing-prep/id6757114416)

**Features:** macOS Compatibility

**In-app purchases:** none


### CRCST Exam

[App page](https://appshunter.io/ios/app/crcst-exam-practice-test-2026/id6793446774)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $7.99 | per 7 days |
| Annual Promo | $34.99 | per year |
| Annual | $49.99 | per year |


## Frequently asked questions

### Is Sterile Processing Prep free?

Sterile Processing Prep costs $2.99, with no in-app purchases.

### Is CRCST Exam free?

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

### Do Sterile Processing Prep or CRCST Exam have ads?

Neither Sterile Processing Prep nor CRCST Exam 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.*