# CRCST Sterile Processing Prep vs CRCST Exam

The clearest difference is device support: CRCST Exam at 3 against CRCST Sterile Processing Prep's 1. On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. CRCST Sterile Processing Prep sells 1 one-off in-app purchase and CRCST Exam sells 3 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | CRCST Sterile Processing Prep | CRCST Exam |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 48 MB | 70 MB |
| Requires iOS | 16.4 | **15.1** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Jinyoung Lee](https://appshunter.io/developer/1880091360) | [Wiktor Pabich](https://appshunter.io/developer/1842657816) |

## What reviewers say

### CRCST Sterile Processing Prep

[App page](https://appshunter.io/ios/app/crcst-sterile-processing-prep/id6787889891)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CRCST Premium Lifetime | $19.99 | one-time |


### 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 CRCST Sterile Processing Prep free?

CRCST Sterile Processing Prep is free to download, with in-app purchases available.

### Is CRCST Exam free?

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

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

Neither CRCST 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.*