# Central Service Exam Review vs Sterile Processing Prep

The clearest difference is rating: Sterile Processing Prep at 5.0 against Central Service Exam Review's 3.0. Sterile Processing Prep also leads on update cadence (every 2 months vs every 23 months). Central Service Exam Review's advantage is ratings volume (4 vs 1) and iOS requirement (15.0 vs 26.1). On price, ads, in-app purchases and monetization model there is nothing between them.

Central Service Exam Review costs $2.99 and Sterile Processing Prep $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Sterile Processing Prep holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

Central Service Exam Review ships an update every 23 months, Sterile Processing Prep every 2 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Central Service Exam Review | Sterile Processing Prep |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/central-service-exam-review/id1070855656/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/sterile-processing-prep/id6757114416/reviews)** |
| Number of ratings | **4** | 1 |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 2 months** |
| Monetization | Paid | Paid |
| Size | 11 MB | 5 MB |
| Requires iOS | **15.0** | 26.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Karim SLITI](https://appshunter.io/developer/1049042697) | [Tracy Gates](https://appshunter.io/developer/1065459770) |

## What reviewers say

### Central Service Exam Review

[App page](https://appshunter.io/ios/app/central-service-exam-review/id1070855656)

Prepare for your Central Services Exam with over 1800 study notes and practice quizzes. This app offers multiple learning styles and offline access to help you master the material and boost your confidence for exam success.

**Highlights:** 1800+ comprehensive study notes, Practice quizzes and term definitions, 5 engaging study modes, Offline access for on-the-go learning, Confidence-building exercises, Flashcards for quick memorization

**Features:** macOS Compatibility

**In-app purchases:** none


### Sterile Processing Prep

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

This app offers structured practice tools and flashcards to help users learn and review sterile processing knowledge. It is designed for certification preparation and real-world practice reinforcement, with all content available offline from the start.

**Highlights:** Domain-based practice quizzes, Flashcards with explanations, Timed and untimed quiz modes, Mock-style exam practice, Score tracking and progress review, Weakest-area study targeting, Offline access

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Central Service Exam Review free?

Central Service Exam Review costs $2.99, with no in-app purchases.

### Is Sterile Processing Prep free?

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

### Which has better reviews, Central Service Exam Review or Sterile Processing Prep?

Sterile Processing Prep is rated higher. Central Service Exam Review averages 3.0 out of 5 from 4 ratings, while Sterile Processing Prep averages 5.0 from 1 ratings.

### Do Central Service Exam Review or Sterile Processing Prep have ads?

Neither Central Service Exam Review nor Sterile Processing Prep shows ads.

### Which is updated more often, Central Service Exam Review or Sterile Processing Prep?

Central Service Exam Review ships an update every 23 months, and Sterile Processing Prep every 2 months. Most recently, Central Service Exam Review was updated on October 24, 2026 and Sterile Processing Prep on October 28, 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.*