# CST Exam Prep 2026 AST vs Sterile Processing Prep 2026

The clearest difference is update cadence: Sterile Processing Prep 2026 at every 2 months against CST Exam Prep 2026 AST's every 11 months. CST Exam Prep 2026 AST's advantage is ratings volume (46 vs 4) and device support (3 vs 1). On price, rating, ads and in-app purchases there is nothing between them.

Both are free to download. CST Exam Prep 2026 AST sells 4 in-app purchases, starting at $8.49 per month and Sterile Processing Prep 2026 sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.8 for CST Exam Prep 2026 AST against 4.8 for Sterile Processing Prep 2026. That said, the two scores are not equally well evidenced: CST Exam Prep 2026 AST has 46 ratings behind it against 4, so its average is the more settled of the two.

CST Exam Prep 2026 AST ships an update every 11 months, Sterile Processing Prep 2026 every 2 months. The most recent releases landed on November 4, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | CST Exam Prep 2026 AST | Sterile Processing Prep 2026 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (46 ratings)](https://appshunter.io/ios/app/cst-exam-prep-2026-ast/id6477819215/reviews)** | [4.8 (4 ratings)](https://appshunter.io/ios/app/sterile-processing-prep-2026/id6758952508/reviews) |
| Number of ratings | **46** | 4 |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 2 months** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 32 MB | 5 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Get Exam](https://appshunter.io/developer/1529117519) | [Deeun Inc.](https://appshunter.io/developer/1691824695) |

## What reviewers say

### CST Exam Prep 2026 AST

[App page](https://appshunter.io/ios/app/cst-exam-prep-2026-ast/id6477819215)

Prepare for your Certified Surgical Technologist exam with over 1600 practice questions and 800 flashcards. Master all exam areas with realistic simulations and detailed rationales. Study anytime, anywhere with offline access and free updates for the latest guidelines.

**Highlights:** 1600+ exam-like questions, 800+ flashcards, 12+ practice exams, Covers all exam areas, Offline access, Free updates, Realistic exam simulation

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 - Month Premium | $8.49 | per month |
| 1 - Week Premium | $8.99 | per 7 days |
| 1 - Month Premium | $16.99 | per month |
| 3 Months Premium | $35.99 | per 3 months |


### Sterile Processing Prep 2026

[App page](https://appshunter.io/ios/app/sterile-processing-prep-2026/id6758952508)

Prepare for sterile processing certification exams with this comprehensive tool. It offers practice questions, calculators for sterilization and chemical dilutions, and quick reference cards for regulations and terms. Master the knowledge and tools needed for success in the SPD department.

**Highlights:** Sterilization Cycle Calculator, Instrument Tray Builder, Chemical Concentration Calculator, Regulation Quick Cards (AAMI, OSHA, FDA, CDC/TJC), SPD Terms and Acronyms Glossary, 700+ Practice Questions, Covers CRCST (HSPA) Certification

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro - Monthly | $9.99 | per month |
| Prep Pro Annual | $24.99 | per year |
| Pro - Lifetime Access | $49.99 | one-time |


## Frequently asked questions

### Is CST Exam Prep 2026 AST free?

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

### Is Sterile Processing Prep 2026 free?

Sterile Processing Prep 2026 is free to download, with in-app purchases available.

### Which has better reviews, CST Exam Prep 2026 AST or Sterile Processing Prep 2026?

CST Exam Prep 2026 AST is rated higher. CST Exam Prep 2026 AST averages 4.8 out of 5 from 46 ratings, while Sterile Processing Prep 2026 averages 4.8 from 4 ratings.

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

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

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

CST Exam Prep 2026 AST ships an update every 11 months, and Sterile Processing Prep 2026 every 2 months. Most recently, CST Exam Prep 2026 AST was updated on November 4, 2026 and Sterile Processing Prep 2026 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.*