# SignSchool vs CST Surgical Tech Prep

The clearest difference is rating: CST Surgical Tech Prep at 5.0 against SignSchool's 4.5. CST Surgical Tech Prep also leads on review sentiment (100% vs 64%). SignSchool's advantage is in-app purchases (none vs 3) and ratings volume (148 vs 1). 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. SignSchool asks for nothing beyond the download.

CST Surgical Tech Prep holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: SignSchool has 148 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 64% of SignSchool's written reviews are positive against 100% of CST Surgical Tech Prep's.

SignSchool ships an update every 2 weeks, CST Surgical Tech Prep every 2 months. The most recent releases landed on October 29, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | SignSchool | CST Surgical Tech Prep |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (148 ratings)](https://appshunter.io/ios/app/signschool/id1145529881/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cst-surgical-tech-prep-test/id6783943033/reviews)** |
| Number of ratings | **148** | 1 |
| Positive reviews | 63.9% of reviews | **100.0% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 2 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 47 MB | 32 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [SignSchool Technologies LLC](https://appshunter.io/developer/1145528110) | [Hermes Inteligencia Digital Ltda](https://appshunter.io/developer/1896694873) |

## What reviewers say

### SignSchool

[App page](https://appshunter.io/ios/app/signschool/id1145529881)

Learn American Sign Language at your own pace with this app. It offers a dictionary of thousands of signs, categorized lessons, and a slow-motion feature for detailed viewing. Practice your skills with a daily sign and a fingerspelling game.

**Highlights:** ASL dictionary with thousands of signs, Categorized sign lessons, Slow-motion sign playback, Fingerspelling game, Sign of the Day

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Great app, very helpful
- 👍 Love the app, easy to use
- 💡 Lots of vocabulary and topics
- 👍 Good for beginners and refreshers
- 👍 Appreciate the free app

**What reviewers complain about**

- 🐛 Blank topics page, some features not working
- 🐛 Videos load slowly, hard to see signs
- 🐛 Missing common words in dictionary
- 🐛 Inconsistent or incorrect signs
- 🐛 Lack of context for sign usage

**Reported bugs**

- Topics page not loading
- Repeated or incorrect signs in dictionary
- App crashing or freezing

**Requested features**

- Add ability to save/favorite words
- Implement quizzes and review features
- Provide more descriptions and explanations for signs
- Include LGBTQ+ and disability-related vocabulary
- Allow offline access to videos


### 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 SignSchool free?

SignSchool 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, SignSchool or CST Surgical Tech Prep?

CST Surgical Tech Prep is rated higher. SignSchool averages 4.5 out of 5 from 148 ratings, while CST Surgical Tech Prep averages 5.0 from 1 ratings.

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

Neither SignSchool nor CST Surgical Tech Prep shows ads.

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

SignSchool ships an update every 2 weeks, and CST Surgical Tech Prep every 2 months. Most recently, SignSchool was updated on October 29, 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.*