# ORninja vs CST Surgical Tech Prep

The clearest difference is review sentiment: CST Surgical Tech Prep at 100% against ORninja's 21%. CST Surgical Tech Prep also leads on rating (5.0 vs 2.3). ORninja's advantage is in-app purchases (none vs 3) and update cadence (fortnightly vs every 2 months). On price, ads and device support there is nothing between them.

Both are free to download. CST Surgical Tech Prep sells 3 in-app purchases, starting at $5.99 per 7 days. ORninja asks for nothing beyond the download.

CST Surgical Tech Prep holds the better App Store score, 5.0 against 2.3. That said, the two scores are not equally well evidenced: ORninja has 25 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 21% of ORninja's written reviews are positive against 100% of CST Surgical Tech Prep's.

ORninja ships an update fortnightly, CST Surgical Tech Prep every 2 months. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | ORninja | CST Surgical Tech Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (25 ratings)](https://appshunter.io/ios/app/orninja/id1589161502/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cst-surgical-tech-prep-test/id6783943033/reviews)** |
| Number of ratings | **25** | 1 |
| Positive reviews | 21.4% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 51 MB | 32 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Ninja Solutions Incorporated](https://appshunter.io/developer/1589161504) | [Hermes Inteligencia Digital Ltda](https://appshunter.io/developer/1896694873) |

## What reviewers say

### ORninja

[App page](https://appshunter.io/ios/app/orninja/id1589161502)

This app provides a digital library of surgical instruments for training operating room support staff. It allows users to learn instrument names and functions at their own pace, and virtually assemble instrument trays for surgical procedures.

**Highlights:** Digital library of surgical instruments, Learn instrument names and functions, Virtual instrument tray assembly, Self-paced learning, Training for OR support staff

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

**In-app purchases:** none


### CST Surgical Tech Prep

[App page](https://appshunter.io/ios/app/cst-surgical-tech-prep-test/id6783943033)

Prepare for your Certified Surgical Technologist (CST) exam with a comprehensive question bank. It offers detailed explanations for each answer, personalized study plans, and progress tracking to build confidence for exam day.

**Highlights:** 2,275 board-style practice questions, Detailed explanations for every answer, 13 full subjects covering the CST blueprint, Daily Plan, Quick 10, Timed Mode, Smart Review, Full-Length Mock Exam, Progress tracking with pass probability, Customizable quizzes

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| CST Prep Pro Weekly | $5.99 | per 7 days |
| CST Prep Pro Monthly | $14.99 | per month |
| Quarterly | $29.99 | per 3 months |


## Frequently asked questions

### Is ORninja free?

ORninja is free to download, with no in-app purchases.

### Is CST Surgical Tech Prep free?

CST Surgical Tech Prep is free to download, with in-app purchases available.

### Which has better reviews, ORninja or CST Surgical Tech Prep?

CST Surgical Tech Prep is rated higher. ORninja averages 2.3 out of 5 from 25 ratings, while CST Surgical Tech Prep averages 5.0 from 1 ratings.

### Do ORninja or CST Surgical Tech Prep have ads?

Neither ORninja nor CST Surgical Tech Prep shows ads.

### Which is updated more often, ORninja or CST Surgical Tech Prep?

ORninja ships an update fortnightly, and CST Surgical Tech Prep every 2 months. Most recently, ORninja was updated on October 24, 2026 and CST Surgical Tech 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.*