# Sterile Processing vs HSPT Prep

The clearest difference is rating: Sterile Processing at 4.8 against HSPT Prep's 2.5. HSPT Prep's advantage is update cadence (every 10 days vs every 4 months). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Sterile Processing sells 3 in-app purchases, starting at $9.99 per month and HSPT Prep sells 2 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Sterile Processing holds the better App Store score, 4.8 against 2.5. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

Sterile Processing ships an update every 4 months, HSPT Prep every 10 days. The most recent releases landed on November 9, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Sterile Processing | HSPT Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/sterile-processing-crcst-prep/id6758952508/reviews)** | [2.5 (2 ratings)](https://appshunter.io/ios/app/hspt-prep-placement-and-test/id6789216831/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 10 days** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 8 MB | 9 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Deeun Inc.](https://appshunter.io/developer/1691824695) | [Hermes Inteligencia Digital Ltda](https://appshunter.io/developer/1896694873) |

## 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 |


### HSPT Prep

[App page](https://appshunter.io/ios/app/hspt-prep-placement-and-test/id6789216831)

Prepare for the High School Placement Test with extensive practice questions and detailed explanations. This app offers personalized study plans, timed modes, and progress tracking to help students build the skills needed for Catholic and private high school entrance exams.

**Highlights:** 750 practice questions, Detailed answer explanations, Coverage of all five test sections, Personalized daily study plans, Timed practice modes, Progress tracking and score projection, Smart review with spaced repetition

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HSPT Prep Weekly | $3.99 | per 7 days |
| HSPT Prep Monthly | $10.99 | per month |


## Frequently asked questions

### Is Sterile Processing free?

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

### Is HSPT Prep free?

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

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

Sterile Processing is rated higher. Sterile Processing averages 4.8 out of 5 from 4 ratings, while HSPT Prep averages 2.5 from 2 ratings.

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

Neither Sterile Processing nor HSPT Prep shows ads.

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

Sterile Processing ships an update every 4 months, and HSPT Prep every 10 days. Most recently, Sterile Processing was updated on November 9, 2026 and HSPT Prep on October 31, 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.*