# CST Practice Test vs AST CST Exam Prep 2026 Test

The clearest difference is iOS requirement: AST CST Exam Prep 2026 Test at 13.0 against CST Practice Test's 17.6. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. CST Practice Test sells 1 one-off in-app purchase and AST CST Exam Prep 2026 Test sells 4 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | CST Practice Test | AST CST Exam Prep 2026 Test |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | — |
| Size | 21 MB | 25 MB |
| Requires iOS | 17.6 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [iAPPSSTUDIO](https://appshunter.io/developer/1830642259) | [FLY SKY PTY LTD](https://appshunter.io/developer/1838696534) |

## What reviewers say

### CST Practice Test

[App page](https://appshunter.io/ios/app/cst-practice-test-scrub-tech/id6770467008)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Get Lifetime Access | $7.99 | one-time |


### AST CST Exam Prep 2026 Test

[App page](https://appshunter.io/ios/app/ast-cst-exam-prep-2026-test/id6779790564)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AST CST Full Access | $6.99 | per 7 days |
| AST CST Full Access | $16.99 | per month |
| AST CST Full Access | $39.99 | per year |
| AST CST Full Access | $79.99 | one-time |


## Frequently asked questions

### Is CST Practice Test free?

CST Practice Test is free to download, with in-app purchases available.

### Is AST CST Exam Prep 2026 Test free?

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

### Do CST Practice Test or AST CST Exam Prep 2026 Test have ads?

Neither CST Practice Test nor AST CST Exam Prep 2026 Test shows ads.

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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.*