# AST CST Test Prep 2026 vs Coloropolis

The clearest difference is in-app purchases: Coloropolis at none against AST CST Test Prep 2026's 3. Coloropolis also leads on update cadence (weekly vs every 5 months). AST CST Test Prep 2026's advantage is iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. AST CST Test Prep 2026 sells 3 in-app purchases, starting at $5.99 per 7 days. Coloropolis asks for nothing beyond the download.

AST CST Test Prep 2026 ships an update every 5 months, Coloropolis weekly. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AST CST Test Prep 2026 | Coloropolis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (80 ratings)](https://appshunter.io/ios/app/ast-cst-test-prep-2026/id6449639659/reviews)** | — |
| Number of ratings | **80** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Weekly** |
| Monetization | Subscription | — |
| Size | 68 MB | 77 MB |
| Requires iOS | **13.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [秀娟 周](https://appshunter.io/developer/1670536523) | [YURII KASHUBA](https://appshunter.io/developer/6786140850) |

## What reviewers say

### AST CST Test Prep 2026

[App page](https://appshunter.io/ios/app/ast-cst-test-prep-2026/id6449639659)

Prepare for your Surgical Technologist certification exam with over 900 practice questions and detailed explanations. This app offers multiple test modes and performance tracking to help you study efficiently and confidently pass your CST exam.

**Highlights:** Over 900 practice questions, Detailed answer explanations, Multiple test modes, Subject classification, Performance tracking, User-friendly interface

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AST CST Premium (1 Week) | $5.99 | per 7 days |
| CST Prep Premium (1 Month) | $17.99 | per month |
| AST CST Premium (3 Months) | $39.99 | per 3 months |


### Coloropolis

[App page](https://appshunter.io/ios/app/coloropolis/id6790624165)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AST CST Test Prep 2026 free?

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

### Is Coloropolis free?

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

### Do AST CST Test Prep 2026 or Coloropolis have ads?

Neither AST CST Test Prep 2026 nor Coloropolis shows ads.

### Which is updated more often, AST CST Test Prep 2026 or Coloropolis?

AST CST Test Prep 2026 ships an update every 5 months, and Coloropolis weekly. Most recently, AST CST Test Prep 2026 was updated on November 3, 2026 and Coloropolis 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.*