# AST CST Test Prep 2026 vs Sterile Processing Tech Exam

The clearest difference is review sentiment: Sterile Processing Tech Exam at 100% against AST CST Test Prep 2026's 0%. Sterile Processing Tech Exam also leads on monetization model (free with in-app purchases vs subscription) and update cadence (every 3 weeks vs every 4 months). AST CST Test Prep 2026's advantage is iOS requirement (13.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. AST CST Test Prep 2026 sells 3 in-app purchases, starting at $5.99 per 7 days and Sterile Processing Tech Exam sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

AST CST Test Prep 2026 ships an update every 4 months, Sterile Processing Tech Exam every 3 weeks. The most recent releases landed on July 19, 2026 and June 7, 2026 respectively.

## The numbers

| Metric | AST CST Test Prep 2026 | Sterile Processing Tech Exam |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (74 ratings)](https://appshunter.io/ios/app/ast-cst-test-prep-2026/id6449639659/reviews)** | — |
| Number of ratings | **74** | — |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 weeks** |
| Monetization | Subscription | **Free with in-app purchases** |
| Size | 53 MB | 45 MB |
| Requires iOS | **13.0** | 15.6 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 12+ | 4+ |
| Developer | [秀娟 周](https://appshunter.io/developer/1670536523) | [Md Tariqul Islam](https://appshunter.io/developer/1789667629) |

## What reviewers say

### AST CST Test Prep 2026

[App page](https://appshunter.io/ios/app/ast-cst-test-prep-2026/id6449639659)

Prepare for your Surgical Technologist certification exam with over 900 practice questions and detailed explanations. This app offers multiple test modes and performance tracking to help you study efficiently and confidently pass your CST exam.

**Highlights:** Over 900 practice questions, Detailed answer explanations, Multiple test modes, Subject classification, Performance tracking, User-friendly interface

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AST CST Premium (1 Week) | $5.99 | per 7 days |
| CST Prep Premium (1 Month) | $17.99 | per month |
| AST CST Premium (3 Months) | $39.99 | per 3 months |


### Sterile Processing Tech Exam

[App page](https://appshunter.io/ios/app/sterile-processing-tech-exam/id6747091287)

Prepare for your Certified Sterile Processing Technician exam with over 1400 practice questions, flashcards, and mock exams. Track your progress and master all five CBSPD domains anytime, anywhere, even offline.

**Highlights:** 1400+ practice questions with explanations, 600+ flashcards for key terms, Timed mock exams, Topic-based quizzes, Progress analytics, Offline access

**Features:** Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $9.99 | per month |
| Yearly | $17.99 | per year |
| Unlimited Plan | $17.99 | one-time |


## Frequently asked questions

### Is AST CST Test Prep 2026 free?

AST CST Test Prep 2026 is free to download, with in-app purchases available.

### Is Sterile Processing Tech Exam free?

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

### Do AST CST Test Prep 2026 or Sterile Processing Tech Exam have ads?

Neither AST CST Test Prep 2026 nor Sterile Processing Tech Exam shows ads.

### Which is updated more often, AST CST Test Prep 2026 or Sterile Processing Tech Exam?

AST CST Test Prep 2026 ships an update every 4 months, and Sterile Processing Tech Exam every 3 weeks. Most recently, AST CST Test Prep 2026 was updated on July 19, 2026 and Sterile Processing Tech Exam on June 7, 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.*