# Sterile Processing vs CRCST Sterile Processing Prep

The clearest difference is rating: CRCST Sterile Processing Prep at 5.0 against Sterile Processing's 4.8. CRCST Sterile Processing Prep also leads on update cadence (every 2 months vs every 4 months). Sterile Processing's advantage is ratings volume (4 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Sterile Processing sells 3 in-app purchases, starting at $9.99 per month and CRCST Sterile Processing Prep sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

CRCST Sterile Processing Prep holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Sterile Processing ships an update every 4 months, CRCST Sterile Processing Prep every 2 months. The most recent releases landed on November 9, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | Sterile Processing | CRCST Sterile Processing Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (4 ratings)](https://appshunter.io/ios/app/sterile-processing-crcst-prep/id6758952508/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/crcst-sterile-processing-prep/id6787889891/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 8 MB | 48 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Deeun Inc.](https://appshunter.io/developer/1691824695) | [Splendid Labs](https://appshunter.io/developer/6804898573) |

## What reviewers say

### Sterile Processing

[App page](https://appshunter.io/ios/app/sterile-processing-crcst-prep/id6758952508)

Prepare for the CRCST exam with practice questions, instrument identification drills, and study guides. Plan your study routine, track progress, and review core sterile processing topics. Offers a free experience with optional monthly, annual, or lifetime subscriptions for full access.

**Highlights:** 320 practice questions, Instrument identification drill, Daily study tasks, Five study guides, 24 flashcards, Progress tracking

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro - Monthly | $9.99 | per month |
| Prep Pro Annual | $29.99 | per year |
| Pro - Lifetime Access | $59.99 | one-time |


### CRCST Sterile Processing Prep

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

Prepare for the CRCST sterile processing exam with over 1,300 practice questions and detailed explanations. Includes timed exams, flashcards, and study notes to reinforce learning across all seven content areas. Study offline and track your progress to build confidence for certification.

**Highlights:** 1,393 practice questions, Explanations for answers, Timed practice exams, Wrong-answer review, Study notes and flashcards, Offline study capability

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CRCST Premium Lifetime | $24.99 | one-time |


## Frequently asked questions

### Is Sterile Processing free?

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

### Is CRCST Sterile Processing Prep free?

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

### Which has better reviews, Sterile Processing or CRCST Sterile Processing Prep?

CRCST Sterile Processing Prep is rated higher. Sterile Processing averages 4.8 out of 5 from 4 ratings, while CRCST Sterile Processing Prep averages 5.0 from 1 ratings.

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

Neither Sterile Processing nor CRCST Sterile Processing Prep shows ads.

### Which is updated more often, Sterile Processing or CRCST Sterile Processing Prep?

Sterile Processing ships an update every 4 months, and CRCST Sterile Processing Prep every 2 months. Most recently, Sterile Processing was updated on November 9, 2026 and CRCST Sterile Processing Prep on November 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.*