# AST CST Exam Prep vs RN Prep With Steph

The clearest difference is review sentiment: RN Prep With Steph at 100% against AST CST Exam Prep's 25%. RN Prep With Steph also leads on rating (5.0 vs 4.6). AST CST Exam Prep's advantage is ratings volume (288 vs 10) and iOS requirement (13.0 vs 15.1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. AST CST Exam Prep sells 2 in-app purchases, starting at $24.99 per month and RN Prep With Steph sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

RN Prep With Steph holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: AST CST Exam Prep has 288 ratings behind it against 10, so its average is the more settled of the two. Written reviews point the same way: 25% of AST CST Exam Prep's written reviews are positive against 100% of RN Prep With Steph's.

AST CST Exam Prep ships an update every 2 months, RN Prep With Steph monthly. The most recent releases landed on November 3, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | AST CST Exam Prep | RN Prep With Steph |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.6 (288 ratings)](https://appshunter.io/ios/app/ast-cst-exam-prep/id1569418216/reviews) | **[5.0 (10 ratings)](https://appshunter.io/ios/app/rn-prep-with-steph/id6758526290/reviews)** |
| Number of ratings | **288** | 10 |
| Positive reviews | 25.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 35 MB | 48 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [MastrAPI](https://appshunter.io/developer/1618627725) | [Taylsec LLC](https://appshunter.io/developer/1873373561) |

## What reviewers say

### AST CST Exam Prep

[App page](https://appshunter.io/ios/app/ast-cst-exam-prep/id1569418216)

Prepare for your Certified Surgical Technologist (CST) exam with a personalized study plan. Practice with over 550 questions, track your progress, and compare your scores to the community average to boost your confidence and pass on your first attempt.

**Highlights:** Personalized study plan, 550+ practice questions, Track strengths and weaknesses, Detailed test statistics, Community score comparison, Multiple exam options

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly with trial | $24.99 | per month |
| Lifetime access | $99.99 | one-time |

**What reviewers like**

- 👍 Useful information
- 👍 App proved useful for exam prep
- 👍 Passed exam with app's help

**What reviewers complain about**

- 🐛 Answers change after submission
- 🐛 Incorrect scoring
- 🐛 Repeated questions
- 🐛 Misspellings and poor wording
- 🐛 Answers marked incorrect when correct

**Reported bugs**

- Answers change after submission
- Incorrect scoring
- Repeated questions
- Misspellings and poor wording
- Answers marked incorrect when correct

**Requested features**

- iPad version of the app
- Personalizing tests
- Better questions


### RN Prep With Steph

[App page](https://appshunter.io/ios/app/rn-prep-with-steph/id6758526290)

Master nursing fundamentals and ace your RN licensing exam with this comprehensive study companion. It offers detailed study guides, practice questions with rationales, and interactive worksheets designed by an experienced nursing educator to foster understanding and build confidence.

**Highlights:** 60+ study guides covering essential nursing topics, 500+ exam-style practice questions with detailed rationales, Interactive worksheets for hands-on practice, Progress tracking and identification of knowledge gaps, Evidence-based approach focusing on critical thinking, Offline access to premium content (coming soon)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium Subscription | $9.99 | per month |
| Yearly Premium Subscription | $99.99 | per year |
| Lifetime Access | $199.99 | one-time |


## Frequently asked questions

### Is AST CST Exam Prep free?

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

### Is RN Prep With Steph free?

RN Prep With Steph is free to download, with in-app purchases available.

### Which has better reviews, AST CST Exam Prep or RN Prep With Steph?

RN Prep With Steph is rated higher. AST CST Exam Prep averages 4.6 out of 5 from 288 ratings, while RN Prep With Steph averages 5.0 from 10 ratings.

### Do AST CST Exam Prep or RN Prep With Steph have ads?

Neither AST CST Exam Prep nor RN Prep With Steph shows ads.

### Which is updated more often, AST CST Exam Prep or RN Prep With Steph?

AST CST Exam Prep ships an update every 2 months, and RN Prep With Steph monthly. Most recently, AST CST Exam Prep was updated on November 3, 2026 and RN Prep With Steph on November 5, 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.*