# Learn Endocrine System vs CST Surgical Tech Prep

The clearest difference is review sentiment: CST Surgical Tech Prep at 100% against Learn Endocrine System's 0%. CST Surgical Tech Prep also leads on price (Free vs $2.99) and update cadence (every 4 weeks vs every 36 months). Learn Endocrine System's advantage is iOS requirement (11.0 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

CST Surgical Tech Prep is free to download; Learn Endocrine System costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Learn Endocrine System ships an update every 36 months, CST Surgical Tech Prep every 4 weeks. The most recent releases landed on October 15, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Learn Endocrine System | CST Surgical Tech Prep |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/cst-surgical-tech-prep-test/id6783943033/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 36 months | **Every 4 weeks** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 14 MB | 26 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [Nurten PIRLI](https://appshunter.io/developer/1495958705) | [Hermes Inteligencia Digital Ltda](https://appshunter.io/developer/1896694873) |

## What reviewers say

### Learn Endocrine System

[App page](https://appshunter.io/ios/app/learn-endocrine-system/id1502996208)

Master human endocrine physiology with this app. It offers quizzes, flashcards, and a glossary covering key topics like glands and disorders. Detailed statistics track your progress and quiz history.

**Highlights:** Quizzes on endocrine physiology, Flashcards for terms, Glossary of endocrine terms, Detailed statistics and progress tracking, Offline access, Covers major endocrine glands and disorders

**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:** none


## Frequently asked questions

### Is Learn Endocrine System free?

Learn Endocrine System costs $2.99, with no in-app purchases.

### Is CST Surgical Tech Prep free?

CST Surgical Tech Prep is free to download, with no in-app purchases.

### Do Learn Endocrine System or CST Surgical Tech Prep have ads?

Neither Learn Endocrine System nor CST Surgical Tech Prep shows ads.

### Which is updated more often, Learn Endocrine System or CST Surgical Tech Prep?

Learn Endocrine System ships an update every 36 months, and CST Surgical Tech Prep every 4 weeks. Most recently, Learn Endocrine System was updated on October 15, 2026 and CST Surgical Tech Prep on October 6, 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.*